Artist's concept of NASA's Juno spacecraft during its Earth flyby gravity assist.

Artist's concept of the Lunar Reconnaissance Orbiter.

Artist Concept of the Lunar Reconnaissance Orbiter

This is an artist's concept of the Orbiting Carbon Observatory.

Pluto seen from the surface of its moon, Charon.

A robotic probe drills into the surface of an asteroid as a meteorite strikes nearby.

An artist's depiction of an Earth type world with two orbiting moons.

Artist's concept of how Saturn might appear from within a hypothetical ice cave on Iapetus.

Artist's concept of a view across the surface of the Moon towards Earth in the distance.

Jupiter's large moon, Europa, is covered by a thick crust of ice.

Flying life forms grace the crimson skies of the earth-like extrasolar planet Gliese 581 c.

A 1950's view of a stream-lined finned spaceship beginning its landing phase.

A scene on Jupiter's moon, Io, the most volcanic body in the solar system.

A striking sunburst on this cosmic seascape.

Ice spires on Jupiter's large moon, Callisto.

Chinese orbital weapons platform in Earth orbit.

Illustration of satellites over Earth's horizon.