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Active Discovery Missions
A mission to study Mercury, the least-explored terrestrial planet in our solar system.
> More about Messenger
A mission to bring cosmic samples to Earth.
> More about Stardust
A smashing success, offering a first look inside a comet.
> More about Deep Impact
A mission to study the interaction between the solar wind and Martian atmosphere.
> More about ASPERA-3
A mission to visit the two oldest asteroids in our solar system.
> More about Dawn
A mission to find Earth-like planets around stars beyond our solar system.
> More about Kepler
Moon Mineralogy Mapper
A mission of opportunity to map the lunar surface.
> More about Moon Mineralogy Mapper
Completed Discovery Missions
A mission to explore the surface of Mars.
> More about Mars Pathfinder
Near Earth Asteroid Rendezvous (NEAR)
A mission to explore the asteroid Eros.
> More about NEAR
A mission to globally map lunar resources, gravity and magnetic fields.
> More about Lunar Prospector
A mission to catch a wisp of raw Sun material for return to Earth.
> More about Genesis
Comet Nucleus Tour (CONTOUR)
A mission to encounter and study two very different comets.
> More about CONTOUR
Discovery and New Frontiers Resources
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Editor: Brooke Boen
NASA Official: Brian Dunbar
Last Updated: April 12, 2008
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