Nasa's

Nasa's Mars rover has found an ancient streambed.

NASA's Mars rover discovered traces of a river bed.

John Glenn was one of the first seven astronauts in NASA's space program.

The Cosmic Dust Laboratory at NASA's Johnson Space Center contains the largest collection of comet debris on Earth.

NASA's Juno spacecraft has entered into orbit around Jupiter.

The principal goal of NASA's Juno mission is to understand the origin and evolution of Jupiter.

NASA's first spacesuits were developed for the Mercury program.

NASA's first spacewalks took place during the Gemini program.

Astronauts prepare for spacewalks by practicing their tasks underwater in a giant pool called NASA's Neutral Buoyancy Laboratory.

Over the last decade NASA launched a series of satellites that offer an unparalleled view of Earth from space. That series, known collectively as NASA's Earth Observing System (EOS), has provided striking new insights into many aspects of Earth, including its clouds, oceans, vegetation, ice, and atmosphere.