Artist's concept of Messenger approaching Mars (Courtesy of NASA/Hopkins University Applied Physic Laboratory/Carnegie Institution of Washington)
Cassini-Huygens
Unlocking the secrets of Saturn.
Learn more about Cassini-Huygens on NASA's website.
Dawn
Dawn launched in September of 2007, becoming the first spacecraft ever planned to orbit two different bodies after leaving Earth. The spacecraft will orbit Vesta and Ceres, two of the largest asteroids in the solar system.
Learn more about Dawn on NASA's website
Hinode (Solar-B)
A collaboration between the space agencies of Japan, the United States, United Kingdom and Europe, Hinode's mission is to investigate the interaction between the sun's magnetic field and its corona.
Learn more about Hinode (Solar-B) on NASA's website.
Hubble Space Telescope
Hubble has expanded our knowledge of the cosmos.
LCROSS
The LCROSS mission is a search for water on the moon.
Learn more about LCROSS on NASA's website.
LRO
LRO (Lunar Reconnaissance Orbiter) will find safe landing sites, locate potential resources and demonstrate new technology.
Learn more about LRO on NASA's website.
Mars Exploration Rover
Rovers Spirit and Opportunity explore the Martian landscape.
Learn more about the rovers on NASA's website.
MRO
MRO (Mars Reconnaissance Orbiter) will determine whether long-standing bodies of water ever existed on Mars.
Learn more about the MRO on NASA's website.
MESSENGER
MESSENGER (Mercury, Surface, Space Environment, Geochemistry and Ranging) will study Mercury, the closest planet to the Sun.
Learn more about the MESSENGER on NASA's website.
New Horizons
New Horizons began its journey across the solar system to conduct flyby studies of Pluto and its moon.
Learn more about the New Horizons on NASA's website.
Polar
The Polar Mission is to obtain data from both high- and low-altitude perspectives of the polar region of geospace.
Learn more about the Polar on NASA's website.
SOHO
SOHO (Solar and Heliospheric Observatory ), designed to study the sun, from its deep core to its outer corona, is a cooperative program between ESA and NASA.
Learn more about SOHO on NASA's website.
STEREO
STEREO (Solar TErrestrial RElations Observatory), continues its mission to capture 3D images of the sun.
Learn more about STEREO on NASA's website.
THEMIS
The 2-year mission of THEMIS (Time History of Events and Macroscale Interactions During Substorms) is to track these violent, colorful eruptions near the North Pole.
Learn more about THEMIS on NASA's website.
TRACE
TRACE (Transition Region and Coronal Explorer) enables solar physicists to study the connections between fine-scale magnetic fields and the associated plasma structures on the Sun.
Learn more about TRACE on NASA's website.