An artist's depiction of NASA's Spirit rover on the surface of Mars. Spirit became unresponsive in March 2010. NASA announced it had ended attempts to communicate with the rover on May 24, 2011. NASA hide caption

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NASA Says A Final Goodbye To Plucky Mars Rover

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Framed in the doors of the Kennedy Center's Vehicle Assembly Building, the crawler begins the long journey toward Launch Pad 37B with space shuttle Discovery in April 2005. This enormous cross between a tank and a cargo ship is the largest self-powered land vehicle in the world. NASA hide caption

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Who Will Shuttle The Last Shuttle? The Crawler Crew

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A satellite image shows a field of what may be buried pyramid sites in Egypt. Courtesy of DigitalGlobe Images hide caption

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Possible Pyramids Discovered From Space

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President Kennedy's "Moon Speech" Turns 50

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The Moon May Be Wetter Than We Thought

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NASA Tries One Last Time To Contact Mars Rover

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A recent view of Earth from the International Space Station. NASA hide caption

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Aboard The Space Station, It's A Beautiful World

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Exoplanets Floating Freely, Without A Star

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NASA's Dawn Spacecraft Closes In On Its Target

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NASA Shoots Legos, Worms And Squid Into Space

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Radio telescopes of the Allen Telescope Array, seen here soon after their construction in 2007, gave SETI's search for intelligent alien life a big boost. Now the array, located in Hat Creek, Calif., has lost the funding it received from the California state government. Ben Margot/AP hide caption

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If E.T. Phones, Will We Hear? SETI Loses Key Funding

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Brenda Mulberry runs a T-shirt and custom merchandise shop just a few miles from Kennedy Space Center. Her husband, Gerry, was let go last month after spending most of his adult life working as a contractor on NASA's shuttle program. Mark Stencel/NPR hide caption

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