Description from the YouTube site, by Evan Schuur:
The intention of this project is to stress the importance of advancing the space frontier and is focused on igniting scientific curiosity in the general public.
Episode 1: http://youtu.be/CbIZU8cQWXc
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. All copyrighted materials contained herein belong to their respective copyright holders, I do not claim ownership over any of these materials. In no way do I benefit either financially or otherwise from this video.
Is NASA a handout, or an investment? What do you think?
If a politician tells you that he or she thinks we cannot afford NASA, doesn’t it strike you that the person does not really understand what the United States is all about? Doesn’t it make you wonder how they ever got to Congress, or why they should stay there?
More:
Dr. Neil de Grasse Tyson at the November 29, 2005 meeting of the NASA Advisory Council, in Washington, D.C. (Wikipedia photo)
John F. Kennedy at Rice University, Houston, Texas, Sept 12, 1962 – photo from NASA
There is no strife, no prejudice, no national conflict in outer space as yet. Its hazards are hostile to us all. Its conquest deserves the best of all mankind, and its opportunity for peaceful cooperation many never come again. But why, some say, the moon? Why choose this as our goal? And they may well ask why climb the highest mountain? Why, 35 years ago, fly the Atlantic? Why does Rice play Texas?
We choose to go to the moon. We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.
Why this speech in Houston? There’s more here than just a speech in a football stadium. Kennedy was working to save the space initiative, and to make America more secure.
In this quest, Kennedy lays out the reasons we need strong science research programs funded by our federal government, and strong science educational achievement in all of our schools.
President John F. Kennedy (1961-1963) awoke on April 12, 1961, to the news that the Soviet Union had won the race to put a man into space. Kennedy immediately met with Vice President Lyndon Johnson in the White House to discuss the embarrassment of the Soviets beating America again. “Can we put a man on the moon before them?” Kennedy asked. A few weeks later, Kennedy challenged the nation to “commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to earth.”
Kennedy challenged Congress and the imaginations of all Americans a few weeks later, when on May 25, in a special Joint Session of Congress, he proposed a Moon exploration program. In a speech outlining defense and foreign policy needs to make the U.S. secure and safe against threats from Soviet communism, or any other nation or faction, Kennedy spoke openly about the space race that had been waged since October 4, 1957, when the Soviet Union became the first nation on Earth to orbit an artificial satellite, Sputnik.
Finally, if we are to win the battle that is now going on around the world between freedom and tyranny, the dramatic achievements in space which occurred in recent weeks should have made clear to us all, as did the Sputnik in 1957, the impact of this adventure on the minds of men everywhere, who are attempting to make a determination of which road they should take. Since early in my term, our efforts in space have been under review. With the advice of the Vice President, who is Chairman of the National Space Council, we have examined where we are strong and where we are not, where we may succeed and where we may not. Now it is time to take longer strides–time for a great new American enterprise–time for this nation to take a clearly leading role in space achievement, which in many ways may hold the key to our future on earth.
I believe we possess all the resources and talents necessary. But the facts of the matter are that we have never made the national decisions or marshalled the national resources required for such leadership. We have never specified long-range goals on an urgent time schedule, or managed our resources and our time so as to insure their fulfillment.
Recognizing the head start obtained by the Soviets with their large rocket engines, which gives them many months of leadtime, and recognizing the likelihood that they will exploit this lead for some time to come in still more impressive successes, we nevertheless are required to make new efforts on our own. For while we cannot guarantee that we shall one day be first, we can guarantee that any failure to make this effort will make us last. We take an additional risk by making it in full view of the world, but as shown by the feat of astronaut Shepard, this very risk enhances our stature when we are successful. But this is not merely a race. Space is open to us now; and our eagerness to share its meaning is not governed by the efforts of others. We go into space because whatever mankind must undertake, free men must fully share.
I therefore ask the Congress, above and beyond the increases I have earlier requested for space activities, to provide the funds which are needed to meet the following national goals:
First, I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish. We propose to accelerate the development of the appropriate lunar space craft. We propose to develop alternate liquid and solid fuel boosters, much larger than any now being developed, until certain which is superior. We propose additional funds for other engine development and for unmanned explorations–explorations which are particularly important for one purpose which this nation will never overlook: the survival of the man who first makes this daring flight. But in a very real sense, it will not be one man going to the moon–if we make this judgment affirmatively, it will be an entire nation. For all of us must work to put him there.
The race was on. The Soviet Union’s massive rocket engines gave them a decided advantage. Kennedy’s challenge captured the imagination of Americans and America. Necessary money flowed from Congress, but not in a completely free flow. Some opposed the nation’s efforts in space exploration because they thought spending on space exploration detracted from the nation’s defense efforts. Kennedy continued to stress the connection between space exploration and defense. He was backed by successes — Navy Commander Alan Shepard, Jr., had successfully launched into space and returned safely; and on February 20, 1962, pilot Marine Capt. John Glenn orbited the Earth three times, catching the U.S. up almost to where the Soviet Union was in manned space exploration.
Kennedy understood that constant attention, constant selling of the space program would be necessary. So in September 1962 he found himself in Houston, the newly-designated home of the manned space program, and he took the opportunity to cast the American goals in the space race as peaceful, good for all mankind, and definitely worth the massive costs.
Notice in how he casts putting a human on the Moon in league with other great achievements of civilization. Kennedy was truly shooting for the stars.
Notice also how he relates space exploration to practical applications then in existence, such as communication, navigation of ships at sea, and weather forecasting. This was years before geosynchronus satellites were used for everyday telephone conversations, years before quantum theory was harnessed for Global Positioning Systems (GPS) and digital personal, handheld telephones, and before the newly-invented printed circuits were miniaturized to make computer calculating a possibility in space — the Moon landing was done with slide rules and hand calculations.
Just over 14 months later Kennedy would die in Texas, in Dallas, on November 22, 1963. On July 20, 1969, Neil Armstrong and Buzz Aldrin landed the Eagle Lunar Module on the Moon, at the Sea of Tranquility. A few hours later, on July 21, they stepped out on the Moon. From Kennedy’s speech to Congress, the task had taken 8 years, one month and 26 days.
Buzz Aldrin on the Moon, with Neil Armstrong, the U.S. flag, and the Eagle Lunar Module reflected in his helmet visor, July 21, 1969 – NASA photo via Wikimedia
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Posted on Sep 12, 2012 09:47:27 AM | Administrator Charles Bolden
NASA Administrator, Major General Charles F. Bolden, Jr (Wikipedia image, probably from official photo; photo added here)
Today marks the 50th anniversary of President Kennedy’s “Address at Rice University on the Nation’s Space Effort,” when the young president shifted our efforts in space from low to high gear. In proclaiming, “We choose to go to the moon,” Kennedy propelled our space program to the forefront of American culture and consciousness, galvanizing an historic effort on which we continue to build today.
Accomplishing Kennedy’s goals, both tangible and intangible, we have taken on his vision to create new challenges and now reach toward new capabilities and destinations. Neil Armstrong first left humanity’s footprint on the moon, and more importantly helped raise the “banner of freedom and peace,” fulfilling Kennedy’s vow to “not see [space] governed by a hostile flag of conquest.”
And we now stand on Armstrong’s shoulders to create a sustainable vision for the future exploration of space. Much like those aboard the Apollo 7, 8, 9, and 10 missions cleared the path for Apollo 11 and Armstrong to land on the moon, our Curiosity rover on Mars is clearing the path for humans – Americans – to land on Mars. Our space program has developed new technologies that made human expansion into the solar system a reality. It created a global enterprise, now spinning off into the private sector, which continues to advance our nation and our world.
We realize now as we did then that we are not just on a mission to discover the universe; we are on a mission to discover ourselves. As astronaut Bill Anders, one of the first three humans to see the far side of the moon, put it, “We came all this way to explore the moon, and the most important thing is that we discovered the Earth.” We cannot forget that the purpose of space exploration is to make life on Earth better, even as we “increase our knowledge and unfold our ignorance,” as Kennedy said, and as we continuously raise the bar of human achievement.
As Kennedy hoped for greater achievements in science and education, in culture, and for peace, he could not have foreseen the degree to which we have unfolded our ignorance. He envisioned “new techniques of learning and mapping and observation, by new tools and computers for industry, medicine, the home as well as the school.”
There are literally thousands of examples of exploration technology being adapted for life on Earth, and a few areas where we have surpassed Kennedy’s greatest dreams: artificial hearts; retrofit systems that convert gas-powered vehicles into gas-electric hybrids, used in such trucks as mail delivery trucks for the U.S. Postal Service; health and fitness monitoring technology capable of measuring and recording vital signs of soldiers, first responders, professional athletes, and consumers seeking to get in shape; and parachutes capable of rescuing entire planes.
Our fleet of Earth observation satellites track hurricanes and wildfires and are able to analyze landslide motion and keep watch on agricultural fields. They provide continuity of data over the long term to help us see how our planet continues to change as a unified system. Our research on the International Space Station has helped us understand processes such as bone and muscle loss especially applicable to our senior citizens.
All this innovation has saved countless lives and billions of dollars, all the while creating thousands of jobs.
And we continue to reach higher. We have opened a new door to commercial space, for instance, helping facilitate a new space transportation industry to low Earth orbit.
Today, to “organize and measure the best of our energies and skills,” as Kennedy charged us, we’re doing things like landing that small SUV-size rover on Mars, now transmitting high definition images and information, which will lead to a better understanding of the Martian environment and the different ways Mars and Earth evolved. By 2018 we will launch our new James Webb Space Telescope, which will serve as our eye in the sky, peering deeper into the universe than ever before.
We’re building our Space Launch System, the most powerful rocket in history, and Orion, the new multi-purpose vehicle crew capsule, which will lead to the first-ever crewed missions beyond the low Earth orbit and the Moon into deep space. President Obama charged us with increasingly difficult challenges, beginning with sending astronauts to an asteroid by 2025 and Mars by the mid-2030s. The journey there will be full of discoveries and new technological breakthroughs.
So while President Kennedy christened our sails on the new sea of space exploration, our work is far from done. Thanks to President Obama, this generation’s young president, we are witnessing a christening of a rejuvenated space program, where we will traverse previously untouched terrain, learning from our past and building on it to forge a bright future.
To watch President Kennedy’s historic speech, visit:
Oliphant’s cartoon shows a future under Mitt Romney and continued GOP domination of the House and Senate — no more Neil Armstrongs doing peaceful work for NASA, like going to the Moon. Tyson expresses hope for something different.
No, it’s not “time to come inside, Grampaw.” It’s time to vote. Vote for the guys whose budget doesn’t say “America cannot afford to be great anymore, American cannot afford to dream.”
Ha! A third thought:
Cover of Goodnight, Moon, by Margaret Wise Brown, with illustrations by Clement Hurd
PASADENA, Calif. — After eight years of planning and eight months of interplanetary travel, NASA’s Mars Science Laboratory pulled off a touchdown of Super Bowl proportions, all by itself. It even sent pictures from the goal line.
The spacecraft plunged through Mars’ atmosphere, fired up a rocket-powered platform and lowered the car-sized, 1-ton Curiosity rover to its landing spot in 96-mile-wide (154-kilometer-wide) Gale Crater. Then the platform flew off to its own crash landing, while Curiosity sent out a text message basically saying, “I made it!”
That message was relayed by the orbiting Mars Odyssey satellite back to Earth. A radio telescope in Australia picked up the message and sent it here to NASA’s Jet Propulsion Laboratory. When the blips of data appeared on the screens at JPL’s mission control, the room erupted in cheers and hugs.
Congratulations! We need good news, and this is great news.
So far as I can tell, no U.S. television network covered the event live in Pasadena. What a shame.
The past decade has been the hottest ever recorded since global temperature records began 150 years ago. This video discusses the impacts of the sun’s energy, Earth’s reflectance and greenhouse gasses on global warming.
Credit: NASA
Vital Signs of the Planet: Global Climate Change and Global Warming. Current news and data streams about global warming and climate change from NASA.
If global warming is not reality, if the anti-warmists are to be found correct, we’re going to need some great cooling to start happening, very, very quickly!
WASHINGTON — The global average surface temperature in 2011 was the ninth warmest since 1880, according to NASA scientists. The finding continues a trend in which nine of the 10 warmest years in the modern meteorological record have occurred since the year 2000.
NASA’s Goddard Institute for Space Studies (GISS) in New York, which monitors global surface temperatures on an ongoing basis, released an updated analysis that shows temperatures around the globe in 2011 compared to the average global temperature from the mid-20th century. The comparison shows how Earth continues to experience warmer temperatures than several decades ago. The average temperature around the globe in 2011 was 0.92 degrees F (0.51 C) warmer than the mid-20th century baseline.
“We know the planet is absorbing more energy than it is emitting,” said GISS director James E. Hansen. “So we are continuing to see a trend toward higher temperatures. Even with the cooling effects of a strong La Nina influence and low solar activity for the past several years, 2011 was one of the 10 warmest years on record.”
The difference between 2011 and the warmest year in the GISS record (2010) is 0.22 degrees F (0.12 C). This underscores the emphasis scientists put on the long-term trend of global temperature rise. Because of the large natural variability of climate, scientists do not expect temperatures to rise consistently year after year. However, they do expect a continuing temperature rise over decades.
The first 11 years of the 21st century experienced notably higher temperatures compared to the middle and late 20th century, Hansen said. The only year from the 20th century in the top 10 warmest years on record is 1998.
Higher temperatures today are largely sustained by increased atmospheric concentrations of greenhouse gases, especially carbon dioxide. These gases absorb infrared radiation emitted by Earth and release that energy into the atmosphere rather than allowing it to escape to space. As their atmospheric concentration has increased, the amount of energy “trapped” by these gases has led to higher temperatures.
The carbon dioxide level in the atmosphere was about 285 parts per million in 1880, when the GISS global temperature record begins. By 1960, the average concentration had risen to about 315 parts per million. Today it exceeds 390 parts per million and continues to rise at an accelerating pace.
The temperature analysis produced at GISS is compiled from weather data from more than 1,000 meteorological stations around the world, satellite observations of sea surface temperature and Antarctic research station measurements. A publicly available computer program is used to calculate the difference between surface temperature in a given month and the average temperature for the same place during 1951 to 1980. This three-decade period functions as a baseline for the analysis.
Hansen said he expects record-breaking global average temperature in the next two to three years because solar activity is on the upswing and the next El Nino will increase tropical Pacific temperatures. The warmest years on record were 2005 and 2010, in a virtual tie.
“It’s always dangerous to make predictions about El Nino, but it’s safe to say we’ll see one in the next three years,” Hansen said. “It won’t take a very strong El Nino to push temperatures above 2010.”
For more information on the GISS temperature analysis, visit:
WASHINGTON — Global surface temperatures in 2010 tied 2005 as the warmest on record, according to an analysis released Wednesday by researchers at NASA’s Goddard Institute for Space Studies (GISS) in New York.
The two years differed by less than 0.018 degrees Fahrenheit. The difference is smaller than the uncertainty in comparing the temperatures of recent years, putting them into a statistical tie. In the new analysis, the next warmest years are 1998, 2002, 2003, 2006, 2007 and 2009, which are statistically tied for third warmest year. The GISS records begin in 1880.
The analysis found 2010 approximately 1.13 F warmer than the average global surface temperature from 1951 to 1980. To measure climate change, scientists look at long-term trends. The temperature trend, including data from 2010, shows the climate has warmed by approximately 0.36 F per decade since the late 1970s.
“If the warming trend continues, as is expected, if greenhouse gases continue to increase, the 2010 record will not stand for long,” said James Hansen, the director of GISS.
The analysis produced at GISS is compiled from weather data from more than 1000 meteorological stations around the world, satellite observations of sea surface temperature and Antarctic research station measurements. A computer program uses the data to calculate temperature anomalies — the difference between surface temperature in a given month and the average temperature for the same period during 1951 to 1980. This three-decade period acts as a baseline for the analysis.
The resulting temperature record closely matches others independently produced by the Met Office Hadley Centre in the United Kingdom and the National Oceanic and Atmospheric Administration’s National Climatic Data Center.
The record temperature in 2010 is particularly noteworthy, because the last half of the year was marked by a transition to strong La Niña conditions, which bring cool sea surface temperatures to the eastern tropical Pacific Ocean.
“Global temperature is rising as fast in the past decade as in the prior two decades, despite year-to-year fluctuations associated with the El Niño-La Niña cycle of tropical ocean temperature,” Hansen and colleagues reported in the Dec. 14, 2010, issue of Reviews of Geophysics.
A chilly spell also struck this winter across northern Europe. The event may have been influenced by the decline of Arctic sea ice and could be linked to warming temperatures at more northern latitudes.
Arctic sea ice acts like a blanket, insulating the atmosphere from the ocean’s heat. Take away that blanket, and the heat can escape into the atmosphere, increasing local surface temperatures. Regions in northeast Canada were more than 18 degrees warmer than normal in December.
The loss of sea ice may also be driving Arctic air into the middle latitudes. Winter weather patterns are notoriously chaotic, and the GISS analysis finds seven of the last 10 European winters warmer than the average from 1951 to 1980. The unusual cold in the past two winters has caused scientists to begin to speculate about a potential connection to sea ice changes.
“One possibility is that the heat source due to open water in Hudson Bay affected Arctic wind patterns, with a seesaw pattern that has Arctic air downstream pouring into Europe,” Hansen said.
December 27 is one of those days — many of us are off work, but it’s after Boxing Day, and it’s not yet on to New Year’s Eve or Day. We should have celebrated, maybe.
We should celebrate December 27 as a day of portent: A good embarkation, and a good, safe end to a nation-encouraging trip to almost touch the Moon.
HMS Beagle, on a voyage of discovery
On December 27, 1831, Charles Darwin and H.M.S. Beagle set sail on an around-the-world voyage of discovery that would change all of science, and especially biology, forever.
December 27 1831
After a few delays, H.M.S. Beagle headed out from Plymouth with a crew of 73 under clear skies and a good wind. Darwin became sea-sick almost immediately.
Darwin never fully overcame his seasickness, but he fought it well enough to become the single greatest collector of specimens in history for the British Museum and British science, a distinction that won him election to science societies even before his return from the trip — and cemented his life in science, instead of in the church. Darwin’s discoveries would have revolutionized biology in any case. In analyzing what he had found, a few years later and with the aid of experts at the British Museum, Darwin realized he had disproved much of William Paley’s hypotheses about life and its diversity, and that another, more basic explanation was possible. This led to his discovery of evolution by natural and sexual selection.
Mini-sheet from the Royal Mail in 2009 honoring Darwin's discoveries in the Galapagos Islands
On December 27, 1968, Apollo 8 splashed down after a successful and heartening trip to orbit the Moon. The three crewmen, Commander Frank Borman, James A. Lovell, Jr., and William A. Anders, had orbited the Moon, a very important milestone in the methodological race to put humans on the Moon (which would be accomplished seven months later). 1968 was a terrible year for the U.S., with the North Korean capture of the U.S.S. Pueblo, assassinations of Rev. Martin Luther King, Jr., and Sen. Robert F. Kennedy during the presidential campaign, riots in dozens of American cities, nasty political conventions with riots at the Democratic Convention in Chicago, a contentious and bitter election making sore the nation’s divide over Vietnam policy, and other problems. On Christmas Eve, Borman, Lovell and Anders broadcast from orbit around the Moon, a triumphant and touching moment for the Apollo Program and Americans around the world. Their safe return on December 27 raised hopes for a better year in 1969.
In 1968, NASA engineers were scrambling to meet President Kennedy’s challenge to land a man on the moon by decade’s end. Because delays with the lunar module were threatening to slow the Apollo program, NASA chose to change mission plans and send the crew of Apollo 8 all the way to the moon without a lunar module.
Exactly 43 years ago, the three astronauts of Apollo 8 became the first humans to orbit another celestial object. As they came around the dark side of the Moon for the third time, Frank Borman, the commander, finally turned their capsule around. And then they saw the Earth.
Borman: Oh my God! Look at that picture over there! Here’s the Earth coming up. Wow, is that pretty.
Anders: Hey, don’t take that, it’s not scheduled.
Borman: (laughing) You got a color film, Jim?
Anders: Hand me that roll of color quick, will you…
One of the resulting photos taken by Anders on a Hasselblad camera became one of the world’s most iconic images.
As Bill Anders recalls it:
I just happened to have one with color film in it and a long lens. All I did was to keep snapping… It’s not a very good photo as photos go, but it’s a special one. It was the first statement of our planet Earth and it was particularly impressive because it’s contrasted against this startling horizon… After all the training and studying we’d done as pilots and engineers to get to the moon safely and get back, [and] as human beings to explore moon orbit, what we really discovered was the planet Earth.
Yeah, we missed toasting it on time in 2010. Plan to raise a glass today, December 27, 2011, to Great Beginnings Day for the human race. December 27 is a day we should remember, for these achievements.
Also on December 27:
1927 – “Show Boat” with music by Jerome Kern and libretto by Oscar Hammerstein II, opened at the Ziegfeld Theater in New York City (AP)
1932 – Radio City Music Hall opened for the first time, with a stage that, to me, looks like an old radio (AP)
Great pictures from NASA’s Solar Dynamics Observatory.
A newly-discovered comet, Comet Lovejoy, orbited dangerously close to the Sun for a ball of ice. Experts predicted it would be the last trip for the little planetoid.
But, then Lovejoy zoomed out from the other side of our home star. Amazing.
See it for yourself:
How surprising was this? Look at this earlier piece, inviting people to watch the end of the comet:
Dec. 16, 2011: This morning, an armada of spacecraft witnessed something that many experts thought impossible. Comet Lovejoy flew through the hot atmosphere of the sun and emerged intact.
“It’s absolutely astounding,” says Karl Battams of the Naval Research Lab in Washington DC. “I did not think the comet’s icy core was big enough to survive plunging through the several million degree solar corona for close to an hour, but Comet Lovejoy is still with us.”
The comet’s close encounter was recorded by at least five spacecraft: NASA’s Solar Dynamics Observatory and twin STEREO probes, Europe’s Proba2 microsatellite, and the ESA/NASA Solar and Heliospheric Observatory. The most dramatic footage so far comes from SDO, which saw the comet go in (movie) and then come back out again (movie).
In the SDO movies, the comet’s tail wriggles wildly as the comet plunges through the sun’s hot atmosphere only 120,000 km above the stellar surface. This could be a sign that the comet was buffeted by plasma waves coursing through the corona. Or perhaps the tail was bouncing back and forth off great magnetic loops known to permeate the sun’s atmosphere. No one knows.
“This is all new,” says Battams. “SDO is giving us our first look1 at comets travelling through the sun’s atmosphere. How the two interact is cutting-edge research.”
“The motions of the comet material in the sun’s magnetic field are just fascinating,” adds SDO project scientist Dean Pesnell of the Goddard Space Flight Center. “The abrupt changes in direction reminded me of how the solar wind affected the tail of Comet Encke in 2007 (movie).”
Comet Lovejoy was discovered on Dec. 2, 2011, by amateur astronomer Terry Lovejoy of Australia. Researchers quickly realized that the new find was a member of the Kreutz family of sungrazing comets. Named after the German astronomer Heinrich Kreutz, who first studied them, Kreutz sungrazers are fragments of a single giant comet that broke apart back in the 12th century (probably the Great Comet of 1106). Kreutz sungrazers are typically small (~10 meters wide) and numerous. The Solar and Heliospheric Observatory sees one falling into the sun every few days.
At the time of discovery, Comet Lovejoy appeared to be at least ten times larger than the usual Kreutz sungrazer, somewhere in the in the 100 to 200 meter range. In light of today’s events, researchers are re-thinking those numbers.
This coronagraph image from the Solar and Heliospheric Observatory shows Comet Lovejoy receding from the sun after its close encounter. The horizontal lines through the comet’s nucleus are digital artifacts caused by saturation of the detector; Lovejoy that that bright! [movie]
“I’d guess the comet’s core must have been at least 500 meters in diameter; otherwise it couldn’t have survived so much solar heating,” says Matthew Knight. “A significant fraction of that mass would have been lost during the encounter. The remains are probably much smaller.”
SOHO and NASA’s twin STEREO probes are monitoring the comet as it recedes from the sun. It is still very bright and should remain in range of the spacecrafts’ cameras for several days to come.
What happens next is anyone’s guess.
“There is still a possibility that Comet Lovejoy will start to fragment,” continues Battams. “It’s been through a tremendously traumatic event; structurally, it could be extremely weak. On the other hand, it could hold itself together and disappear back into the recesses of the solar system.”
“It’s hard to say,” agrees Knight. “There has been so little work on what happens to sungrazing comets after perihelion (closest approach). This continues to be fascinating.”
Author:Dr. Tony Phillips| Production editor: Dr. Tony Phillips | Credit: Science@NASA
More Information
Footnote:1“When SDO was launched we thought we would see nothing besides the Sun and the dark disks of the Moon, Earth, Venus, and Mercury in our images,” says SDO project scientist Dean Pesnell of GSFC. “No other bright object would be visible because our instruments are designed to look at the Sun. Now we are measuring the mass and composition of comets by turning the comet inside out.”
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This will strike a note of joy in the heart of every Boy Scout and every orienteer in the world: The U.S. and Japan have teamed up for new, super-accurate topographic maps.
NASA, Japan Release Improved Topographic Map Of Earth
WASHINGTON — NASA and Japan released a significantly improved version of the most complete digital topographic map of Earth on Monday, produced with detailed measurements from NASA’s Terra spacecraft.
The map, known as a global digital elevation model, was created from images collected by the Japanese Advanced Spaceborne Thermal Emission and Reflection Radiometer, or ASTER, instrument aboard Terra. So-called stereo-pair images are produced by merging two slightly offset two-dimensional images to create the three-dimensional effect of depth. The first version of the map was released by NASA and Japan’s Ministry of Economy, Trade and Industry (METI) in June 2009.
“The ASTER global digital elevation model was already the most complete, consistent global topographic map in the world,” said Woody Turner, ASTER program scientist at NASA Headquarters in Washington. “With these enhancements, its resolution is in many respects comparable to the U.S. data from NASA’s Shuttle Radar Topography Mission (SRTM), while covering more of the globe.”
The improved version of the map adds 260,000 additional stereo-pair images to improve coverage. It features improved spatial resolution, increased horizontal and vertical accuracy, more realistic coverage over water bodies and the ability to identify lakes as small as 0.6 miles (1 kilometer) in diameter. The map is available online to users everywhere at no cost.
“This updated version of the ASTER global digital elevation model provides civilian users with the highest-resolution global topography data available,” said Mike Abrams, ASTER science team leader at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “These data can be used for a broad range of applications, from planning highways and protecting lands with cultural or environmental significance, to searching for natural resources.”
The ASTER data cover 99 percent of Earth’s landmass and span from 83 degrees north latitude to 83 degrees south. Each elevation measurement point in the data is 98 feet (30 meters) apart.
NASA and METI are jointly contributing the data for the ASTER topographic map to the Group on Earth Observations, an international partnership headquartered at the World Meteorological Organization in Geneva, Switzerland, for use in its Global Earth Observation System of Systems. This “system of systems” is a collaborative, international effort to share and integrate Earth observation data from many different instruments and systems to help monitor and forecast global environmental changes.
ASTER is one of five instruments launched on Terra in 1999. ASTER acquires images from visible to thermal infrared wavelengths, with spatial resolutions ranging from about 50 to 300 feet (15 to 90 meters). A joint science team from the United States and Japan validates and calibrates the instrument and data products. The U.S. science team is located at JPL.
NASA, METI, Japan’s Earth Remote Sensing Data Analysis Center (ERSDAC), and the U.S. Geological Survey validated the data, with support from the U.S. National Geospatial-Intelligence Agency and other collaborators. The data are distributed by NASA’s Land Processes Distributed Active Archive Center at the U.S. Geological Survey’s Earth Resources Observation and Science Center in Sioux Falls, S.D., and by ERSDAC in Tokyo.
Users of the new version of the ASTER data products are advised that while improved, the data still contain anomalies and artifacts that will affect its usefulness for certain applications.
Data users can download the ASTER global digital elevation model at:
New topographical map of Earth released October 17, 2011, from the Ministry of Economy, Trade, and Industry (METI) of Japan and the United States National Aeronautics and Space Administration (NASA)
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Two years ago warming denialists claimed the Earth is actually cooling, and they predicted dramatic cooling by late 2010.
Instead, warming continues, overcoming the temporary mediation caused by increased particulate and sulfate emissions from coal burned in uncontrolled fashion in China, as evidence by things like the continued shrinking of Arctic ice below 20th century averages. See this press release from NASA:
WASHINGTON — Last month the extent of sea ice covering the Arctic Ocean declined to the second-lowest extent on record. Satellite data from NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado in Boulder showed that the summertime sea ice cover narrowly avoided a new record low.
The Arctic ice cap grows each winter as the sun sets for several months and shrinks each summer as the sun rises higher in the northern sky. Each year the Arctic sea ice reaches its annual minimum extent in September. It hit a record low in 2007.
The near-record ice-melt followed higher-than-average summer temperatures, but without the unusual weather conditions that contributed to the extreme melt of 2007. “Atmospheric and oceanic conditions were not as conducive to ice loss this year, but the melt still neared 2007 levels,” said NSIDC scientist Walt Meier. “This probably reflects loss of multiyear ice in the Beaufort and Chukchi seas as well as other factors that are making the ice more vulnerable.”
Joey Comiso, senior scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md., said the continued low minimum sea ice levels fits into the large-scale decline pattern that scientists have watched unfold over the past three decades.
“The sea ice is not only declining, the pace of the decline is becoming more drastic,” Comiso said. “The older, thicker ice is declining faster than the rest, making for a more vulnerable perennial ice cover.”
While the sea ice extent did not dip below the 2007 record, the sea ice area as measured by the microwave radiometer on NASA’s Aqua satellite did drop slightly lower than 2007 levels for about 10 days in early September, Comiso said. Sea ice “area” differs from extent in that it equals the actual surface area covered by ice, while extent includes any area where ice covers at least 15 percent of the ocean.
Arctic sea ice extent on Sept. 9, the lowest point this year, was 4.33 million square kilometers (1.67 million square miles). Averaged over the month of September, ice extent was 4.61 million square kilometers (1.78 million square miles). This places 2011 as the second lowest ice extent both for the daily minimum extent and the monthly average. Ice extent was 2.43 million square kilometers (938,000 square miles) below the 1979 to 2000 average.
This summer’s low ice extent continued the downward trend seen over the last 30 years, which scientists attribute largely to warming temperatures caused by climate change. Data show that Arctic sea ice has been declining both in extent and thickness. Since 1979, September Arctic sea ice extent has declined by 12 percent per decade.
“The oldest and thickest ice in the Arctic continues to decline, especially in the Beaufort Sea and the Canada Basin,” NSIDC scientist Julienne Stroeve said. “This appears to be an important driver for the low sea ice conditions over the past few summers.”
Climate models have suggested that the Arctic could lose almost all of its summer ice cover by 2100, but in recent years, ice extent has declined faster than the models predicted.
NASA monitors and studies changing sea ice conditions in both the Arctic and Antarctic with a variety of spaceborne and airborne research capabilities. This month NASA resumes Operation IceBridge, a multi-year series of flights over sea ice and ice sheets at both poles. This fall’s campaign will be based out of Punta Arenas, Chile, and make flights over Antarctica. NASA also continues work toward launching ICESat-2 in 2016, which will continue its predecessor’s crucial laser altimetry observations of ice cover from space.
To see a NASA data visualization of the 2011 Arctic sea ice minimum as measured by the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) on Aqua, visit:
Here is that visualization, presented by Cryosphere Program Manager, Tom Wagner:
On Sept. 9th, 2011, Arctic sea ice most likely hit its minimum extent for the year. On Sept. 20th, NASA’s Cryosphere Program Manager, Tom Wagner, shared his perspectives on the ice with television audiences across the country.
On the top of the world, a pulsing, shifting body of ice has profound effects on the weather and climate of the rest of the planet. Every winter as temperatures dip, sea ice freezes out of cold Arctic Ocean waters, and every summer the extent of that ice shrinks as warm ocean temperatures eat it away. Ice cover throughout the year can affect polar ecosystems, world-wide ocean currents, and even the heat budget of the Earth.
During the last 30 years we’ve been monitoring the ice with satellites, there has been a consistent downward trend, with less and less ice making it through the summer. The thickness of that ice has also diminished. In 2011 Arctic sea ice extent was its second smallest on record, opening up the fabled Northwest Passages and setting the stage for more years like this in the future. In this video, NASA’s Cryosphere Program Manager, Tom Wagner, shares his perspectives on the 2011 sea ice minimum.
NASA’s 30-year Space Transportation System (STS) program came to an end on 21st July 2011. The Space Shuttle fleet delivered the Hubble Space Telescope, the International Space Station, and dozens of satellites, space probes, crew and supplies. Two Shuttles were lost: Challenger in 1986 and Columbia in 2003. The touchdown of Atlantis at Kennedy Space Center marked the end of an era, after 135 missions. This video shows all of them in chronological order. http://www.nature.com/spaceshuttle
Soundtrack: ‘PX3’ and ‘Retreat! Retreat!’ by 65daysofstatic.
No sooner than the smell of low Earth orbit had worn off the space shuttle Atlantis, Nature editor Adam Rutherford was stitching together footage of its final mission into this wonderful tribute to the golden age of manned spaceflight.
So long, Space Shuttle. We miss you already.
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Spread the word; friends don't allow friends to repeat history.
One of the most dramatic categories of evidence that the U.S. landed men on the Moon is the detritus and other stuff they left behind. Now we have satellites orbiting the Moon that can send back images of the landing sites with an amazing amount of detail.
Around the 4th of July somebody usually wonders how those flags left behind, are doing.
CBS News reporter Jim Axelrod asked around; you can see his report at YouTube (CBS disallows embedding of these reports, so you’ll need to click the image a couple of times to go to the YouTube site for CBS):
(720 views of this report when I posted this; come on, news hounds, flag fliers and Moon and history buffs, you can boost that total.)
Spread the word; friends don't allow friends to repeat history.
Or, until that account is unsuspended by the forces supporting Donald Trump: Follow @FillmoreWhite, the account of the Millard Fillmore White House Library
We've been soaking in the Bathtub for several months, long enough that some of the links we've used have gone to the Great Internet in the Sky.
If you find a dead link, please leave a comment to that post, and tell us what link has expired.
Thanks!
Retired teacher of law, economics, history, AP government, psychology and science. Former speechwriter, press guy and legislative aide in U.S. Senate. Former Department of Education. Former airline real estate, telecom towers, Big 6 (that old!) consultant. Lab and field research in air pollution control.
My blog, Millard Fillmore's Bathtub, is a continuing experiment to test how to use blogs to improve and speed up learning processes for students, perhaps by making some of the courses actually interesting. It is a blog for teachers, to see if we can use blogs. It is for people interested in social studies and social studies education, to see if we can learn to get it right. It's a blog for science fans, to promote good science and good science policy. It's a blog for people interested in good government and how to achieve it.
BS in Mass Communication, University of Utah
Graduate study in Rhetoric and Speech Communication, University of Arizona
JD from the National Law Center, George Washington University
Posted by Ed Darrell 
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