NASA's Spirit rover, which explored the Martian surface for six years and found evidence of a once watery planet, snapped this historic image in 2004. "This is the first image eve… See more

En route to Jupiter in 2013, NASA's Juno spacecraftswung around Earth to pick up speed, a strategy known as a gravity assist. Meanwhile, a camera aboard the craft captured vi… See more

In 2013, NASA's Cassini spacecraft snapped an exceptional view of our vivid blue planet beyond Saturn's glorious rings. "At a distance of just under 900 million miles, Eart… See more

Not many spacecraft visit Mercury, the closest planet to the sun. But in 2013, NASA's MESSENGERspacecraft — short for Mercury Surface, Space, Environment, Geochemis… See more