A photograph from the 1960's showing Stan Lebar, former Westinghouse Electric program manager, holding two cameras used during the Apollo missions is seen on a large video monitor above panelists, including Sta More
The space shuttle Endeavour is seen as it traverses through Inglewood, Calif. on Friday, Oct. 12, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in More
The space shuttle Endeavour is seen as it is maneuvered through the streets of Inglewood on its way to its new home at the California Science Center, Saturday, Oct. 13, 2012. Endeavour, built as a replacement More
Graphics showing how TV signals were sent from the Apollo 11 mission back to Earth are shown on a large video monitor above panelists at NASA's briefing where restored Apollo 11 moonwalk footage was revealed fo More
Archived and restored Apollo 11 moonwalk footage is shown on a large video monitor above panelists at a NASA briefing where restored Apollo 11 moonwalk footage was revealed for the first time at the Newseum, Th More
The Apollo 11 logo is seen on a large video monitor above panelists at NASA's briefing where restored Apollo 11 moonwalk footage was revealed for the first time at the Newseum, Thursday, July 16, 2009, in Washi More
NASA Apollo 11 Mission Commander and first man to set foot on the Moon, Neil Armstrong speaks at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washi More
From left, NASA Administrator Charles Bolden, Rice University Electrical and Engineering Student Max Paul, Former Maryland Lieutenant Governor and niece of President John F. Kennedy, Kathleen Kennedy Townsend, More
Former Maryland Lieutenant Governor and niece of President John F. Kennedy, Kathleen Kennedy Townsend speaks at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20 More
Director of the Hayden Planetarium Neil deGrasse Tyson speaks as host of the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Photo Credit: (NA More
Jazz pianist and singer Diana Krall performs at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Diana Krall talked about her love of spac More
Former NASA Astronaut and U.S. Senator John Glenn is seen at the opening of the exhibit "Alan Bean: Painting Apollo, First Artist on Another World" at the National Air and Space Museum, Monday, July 20, 2009 in More
Apollo 11 Astronauts, from left, Michael Collins, Neil Armstrong, Buzz Aldrin and NASA Administrator Charles Bolden attend the U.S House of Representatives Committee on Science and Technology tribute to the Apo More
Guests use their laptop computers to "Tweet" and follow a NASA STS-125 crew presentation on Twitter at the NASA Tweetup event held at NASA Headquarters, July 21, 2009 in Washington. Nearly 200 of NASA’s Twitter More
Guests at NASA Headquarters in Washington, DC prepare for a Tweetup on July 21, 2009. Nearly 200 of NASA’s Twitter followers are in attendance, which features a presentation and a question and answer session wi More
NASA Astronaut and STS-125 Mission Specialist John Grunsfeld answers a question during a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarters, July 2 More
NASA Astronaut and STS-125 Mission Specialist Michael Good answers a question during a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarters, July 21, More
NASA Astronaut Mike Massimino, known as "Astro_Mike" on Twitter, prepares to give a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarters, July 21, 20 More
NASA Astronaut and STS-125 Mission Pilot Scott Altman prepares to give a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarters, July 21, 2009 in Washi More
Al Feinberg from NASA Television, interviews a guest at the NASA Tweetup event held at NASA Headquarters, July 21, 2009 in Washington. Nearly 200 of NASA’s Twitter followers are in attendance, which features a More
NASA Astronaut Mike Massimino, known as "Astro_Mike" on Twitter, answers a question during a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarters, Ju More
NASA Astronaut and STS-125 Mission Pilot Scott Altman answers questions at the NASA Tweetup event held at NASA Headquarters, July 21, 2009 in Washington. Nearly 200 of NASA’s Twitter followers are in attendance More
NASA AStronaut and STS-125 Mission Specialist Andrew Feustel, right, answers a question during a presentation with fellow STS-125 shuttle mission crew members at the NASA Tweetup event held at NASA Headquarter More
STS-125 shuttle mission crew members, from left, Scott Altman, Gregory Johnson, Megan McArthur, Andrew Feustel, John Grunsfeld, Michael Good and Michael Massimino, give a presentation at the NASA Tweetup event More
NASA Astronaut and STS-127 Mission Commander Mark Polansky, far left, answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitter fol More
NASA Astronaut and STS-127 Mission Commander Mark Polansky, also known as @Astro_127 on Twitter, answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly More
Jim Green (second from left), director, Planetary Science Division, Science Mission Directorate at NASA Headquarters in Washington discusses NASA’s findings of water molecules in the polar regions of the moon a More
Roger Clark, team member, Cassini spacecraft Visual and Infrared Mapping Spectrometer and co-investigator, Moon Mineralogy Mapper, U.S. Geological Survey in Denver answers questions on NASA’s discovery of water More
NASA Astronaut and STS-127 Mission Commander Mark Polansky, left, answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitter followers More
Al Feinberg from NASA Television, center, interviews a guest at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitter followers are in attendance, whi More
NASA Astronaut and Mission Speciliast Tom Marshburn answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitter followers are in attend More
Canadian Space Agency Astronaut and STS-127 Mission Specialist Julie Payette answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitte More
NASA Astronaut and Mission Specialist Dave Wolf, center, answers questions at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s Twitter followers are in a More
Jim Green (far left), director, Planetary Science Division, Science MissionDirectorate at NASA Headquarters in Washington; Carle Pieters, principal investigator, Moon Mineralogy Mapper, Brown University; Rob Gr More
STS-127 shuttle mission crew members from left, Commander Mark Polansky, Pilot Doug Hurley, Mission Specialists Christopher Cassidy, Tom Marshburn, Dave Wolf and Julie Payette of the Canadian Space Agency, give More
Guests use their laptop computers to "Tweet" and follow a NASA STS-127 crew presentation on Twitter at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. Nearly 200 of NASA’s T More
Rob Green, project instrument scientist, Moon Mineralogy Mapper, at NASA's Jet Propulsion Laboratory in Pasadena, CA answers questions on NASA’s discovery of water molecules in the polar regions of the moon at More
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Don Mitchell, far left, Cassini spacecraft instrument scientist, IBEX co-Investigator, Johns Hopkins University Applied Physics Laboratory in Laurel, Md., answers questions on findings made by NASA's Interstell More
Eric Christian, center, IBEX deputy mission scientist, NASA's Goddard Space Flight Center in Greenbelt, Md., discusses findings made by NASA's Interstellar Boundary Explorer, IBEX, at NASA Headquarters in Washi More
Rosine Lallement, senior scientist at the French National Center for Scientific Research in Paris discusses findings made by NASA's Interstellar Boundary Explorer, IBEX, at NASA Headquarters in Washington, Thur More
Former NASA astronaut Tom Jones shows off a sleeping bag used by astronauts living aboard the International Space Station during a NASA Tweetup event at NASA Headquarters in Washington, Wednesday, Oct. 21, 2009 More
NASA Deputy Administrator Lori Garver welcomes attendees to a live Tweetup event at NASA Headquarters in Washington with astronauts living aboard the International Space Station (ISS), Wednesday, Oct. 21, 2009. More
Former NASA astronaut Tom Jones answers questions from Tweetup attendees at NASA Headquarters in Washington on what it is like to live and work in space, Wednesday, Oct. 21, 2009. Photo Credit: (NASA/Carla Cioffi)
Expedition 20 Flight Engineers Jeff Williams, left, and Nicole Stott are seen during a live broadcast from the International Space Station (ISS) as they answer questions from NASA Twitter followers at NASA Head More
Expedition 20 Flight Engineers Jeff Williams, left, and Nicole Stott, seen on screen, are asked a question by a NASA Twitter follower, center, during a question and answer session at a live Tweetup event at NAS More
John Yembrick, NASA Public Affairs Officer, introduces a live Tweetup event to thirty-five of NASA's Twitter followers at NASA Headquarters in Washington, Wednesday, Oct. 21, 2009. Photo Credit: (NASA/Carla Cioffi)
NASA astronaut Mike Fincke, a former International Space Station commander, seen on screen, is asked a question by a NASA Twitter follower, left, during a question and answer session at a live Tweetup event at More
Expedition 20 Flight Engineers Jeff Williams, left, and Nicole Stott, seen on screen, are asked a question by a NASA Twitter follower, right, during a question and answer session at a live Tweetup event at NASA More
NASA astronaut Mike Fincke, a former International Space Station commander, is seen on screen as he answers questions from NASA Twitter followers during a live Tweetup event held at NASA Headquarters in Washing More
NASA and the X PRIZE Foundation announced the winners of the Northrop Grumman Lunar Lander Challenge at an awards ceremony at the Rayburn House Office Building, Thursday, Nov. 5, 2009 in Washington, DC. From l More
NASA Administrator Charles Bolden gives opening remarks at an awards ceremony for the Northrop Grumman Lunar Lander Challenge at the Rayburn House Office Building on Nov. 5, 2009, in Washington, DC. NASA's Cen More
Veronica McGregor, NASA public affairs officer, known on twitter as @veronicamcg, speaks during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. NA More
Attendees at a two-day NASA Tweetup at Kennedy Space Center twitter live about their impressions during the Tweetup in Cape Canaveral, Fla., Sunday, Nov. 15, 2009. NASA Twitter followers in attendance will have More
Wayne Hale, NASA strategic program planning manager speaks during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. NASA Twitter followers in attend More
Ares I-X Deputy Mission Manager Jon Cowart shows a space shuttle solid rocket booster (SRB) separation bolt during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday More
Twitter user Paul Thompson from Dallas, Texas, who goes by the twitter name @flyingphotog, uses his laptop during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, More
Wayne Hale, NASA strategic program planning manager, is seen on video camera as he speaks during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. N More
NASA Twitter follower Heather Goss from Washington, DC, who goes by the twitter name @heathermg, twitters as she stands in front of space shuttle Atlantis at launch pad 39A as part of during a tour of Kennedy S More
Twitter user Karim Jazouani from Casablanca, Morocco, who goes by the twitter name @karimjazouani, uses his laptop during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, More
Twitter users Risa Wechster from Stanford University, left, and Daniel Holz from Los Alamos, both twitter for @cosmicvariance during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Cana More
Twitter users arrive for the start of a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. NASA Twitter followers in attendance will have the opportuni More
Miles O'Brien, veteran space reporter, known on twitter as @milesobrien, speaks during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. NASA Twitte More
NASA Twitter followers tour the International Space Station Center at the Kennedy Space Center in Cape Canaveral, Fla. as part of a two-day Tweetup event, Sunday, Nov. 15, 2009. Tweeps had the chance to enter f More
Twitter user Ann Marie Cunningham who goes by the twitter name @talkingscience.org, right, uses her laptop, while Laura Burns, who goes by the twitter name @moonrangerlaura, listens to a guest speaker during a More
Mike Massimino, NASA Astronaut, known on twitter as @Astro_Mike, speaks during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. NASA Twitter follow More
Twitter user Laura Burns, left, who goes by the twitter name @moonrangerlaura, listens to a guest speaker, while Ann Marie Cunningham who goes by the twitter name @talkingscience.org, uses her laptop during a t More
Twitter user Dave Gibson from Lawrenceville, GA, who goes by the twitter name @davecgibson, listens to a guest speaker during a two-day NASA Tweetup event held at NASA's Kennedy Space Center in Cape Canaveral, More
A NASA "Tweep" has his picture taken in front of space shuttle Atlantis at launch pad 39A during a tour of Kennedy Space Center in Cape Canaveral, Fla, Sunday, Nov. 15, 2009. Space shuttle Atlantis is set to la More
Guests at NASA's Kennedy Space Center view the launch of space shuttle Atlantis in Cape Canaveral, Fla., on Monday, Nov. 16, 2009. Space shuttle Atlantis and its six-member crew began the 11-day STS-129 missio More
NASA Twitter followers attending a two-day NASA Tweetup presented NASA Public Affairs Officers with a signed poster from Kennedy Space Center expressing their appreciation for hosting this unique event, Monday, More
Ann Marie Cunningham, center, along with other NASA Twitter followers wave to the Astro van as it passes by en route to launch pad 39A with the crew of STS-129, Monday, Nov. 16, 2009 at Kennedy Space Center in More
Guests at NASA's Kennedy Space Center view the launch of space shuttle Atlantis in Cape Canaveral, Fla., on Monday, Nov. 16, 2009. New Orleans Mayor Ray Nagin, third from left, attended the launch with his fam More
Attendees at a two-day NASA Tweetup at Kennedy Space Center twitter live about their impressions during the Tweetup in Cape Canaveral, Fla., Sunday, Nov. 15, 2009. NASA Twitter followers in attendance will hav More
NASA Twitter followers wave to the Astro van as it passes by en route to launch pad 39A with the crew of STS-129, Monday, Nov. 16, 2009 at Kennedy Space Center in Cape Canaveral, Fla. The Twitter users were pa More
Douglas R. Cooke, NASA's Associate Administrator for Exploration Systems Mission Directorate (ESMD), appears before the U.S. House of Representatives' Committee on Science and Technology, Subcommittee on Space More
U.S. Congressman Dana Rohrabacher, R-CA, makes a point during the U.S. House of Representatives' Committee on Science and Technology, Subcommittee on Space and Aeronautics to discuss proposed changes to NASA's More
A. Thomas Young, retired Executive Vice President, Lockheed Martin, appears before the U.S. House of Representatives' Committee on Science and Technology, Subcommittee on Space and Aeronautics to discuss propos More
U.S. Congresswoman Gabrielle Giffords, D-AZ, left, shows a childs' drawing while U.S. Congressman Pete Olson, R-TX, looks on at the U.S. House of Representatives' Committee on Science and Technology, Subcommitt More
Douglas R. Cooke, left, NASA's Associate Administrator for Exploration Systems Mission Directorate (ESMD) and A. Thomas Young, retired Executive Vice President, Lockheed Martin appear before the U.S. House of R More
A. Thomas Young, right, retired Executive Vice President, Lockheed Martin, speaks before the U.S. House of Representatives' Committee on Science and Technology, Subcommittee on Space and Aeronautics to discuss More
The Soyuz TMA-18 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Wednesday, March, 31, 2010. The launch of the Soyuz spacecraft with Expedition 23 Soyuz Commander Al More
The Soyuz TMA-18 spacecraft is raised into position shortly after it was rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Wednesday, March, 31, 2010. The launch of the Soyuz spacecr More