Behold the first image taken of Earth from the surface of another planet. NASA’s Spirit rover took the mosaic photo from Mars in early 2004.
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The probe is set to become the third human-made object to leave the solar system, but it must first cross this mysterious boundary.
New measurements could force astronomers to revise the mass of the galaxy.
The retired space shuttle will look launch-ready at its new home in California.
NASA’s never-before-attempted plan to move a sensitive scientific satellite into a safer orbit has faced a week of delays—but it’s still go for launch.
Image: NASA/JPL-Caltech/Cornell/Texas A&M 
