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| Advanced Composition Explorer (ACE)
Major mission of the Explorer program.
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| ACRIMSAT Mission
The ACRIMSAT Mission will measure Total Solar Irradiance (TSI), measuring the Sun's energy, during its five-year mission life.
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| Apollo
President Kennedy's bold challenge set the nation on a journey unlike any before in human history--a journey to land on the moon.
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| Cassini-Huygens Mission
Unlocking the secrets of Saturn.
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| Deep Impact
Exploring Comet Tempel 1 to determine the origins of life in our Solar System.
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| Gemini
Bridge to the moon.
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| Genesis Mission
The search for origins.
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| Hayabusa (MUSES-C)
Hayabusa (MUSES-C) is Japan's asteroid sample return mission.
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| Mars Exploration Rovers
Rovers Spirit and Opportunity explore the Martan landscape.
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| Mars Global Surveyor
Surveyor will return data regarding Mars' surface features, atmosphere, and magnetic properties. Scientists will use the data gathered from this mission to learn about the Earth by comparing it to Mars.
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| Mars Odyssey
This orbiter is mapping the mineralogy and morphology of the Martian surface.
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| Mars Pathfinder
Mars Pathfinder was the first mission to deliver a lander and a free-ranging robotic rover to the surface of Mars.
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| Mars Reconnaissance Orbiter
The mission will determine whether long-standing bodies of water ever existed on Mars.
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| Mercury
America's First Space Program.
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| Mercury, Surface, Space Environment, Geochemistry and Ranging (MESSENGER) Mission
MESSENGER will study Mercury, the closest planet to the Sun.
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| New Horizons
New Horizons began its journey across the solar system to conduct flyby studies of Pluto and its moon.
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| Pioneer
A journey through our solar system and beyond.
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| Pioneer Venus
The mission's objective was to investigate the Venus's solar wind, map the planet's surface and study the upper atmosphere.
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| Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI)
RHESSI's primary mission is to explore the basic physics of particle acceleration and explosive energy release in solar flares.
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| Rosetta Mission
Rosetta will orbit comet 67P and accompany it on its journey to the Sun.
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| Skylab
America's first space station and orbital science and engineering laboratory.
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| SMART 1
SMART 1's two part mission will test new technologies and explore darker regions of the Moon's south pole for the first time.
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| Solar and Heliospheric Observatory (SOHO)
SOHO is designed to study the internal structure of the Sun, its extensive outer atmosphere and the origin of the solar wind.
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| Solar Radiation and Climate Experiment (SORCE)
A NASA-sponsored satellite mission that will provide state-of-the-art measurements of incoming x-ray, ultraviolet, visible, near-infrared, and total solar radiation.
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| Solar TErrestrial RElations Observatory (STEREO)
STEREO Readies for Sun Imaging Mission
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| Stardust
Stardust returns samples from Comet Wild 2 to Earth.
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| Tracking and Data Relay Satellite (TDRS) Project
A system of satellites and ground stations that make up a portion of the Space Network and provides mission services for near Earth satellites and orbiting vehicles.
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| Transition Region and Coronal Explorer (TRACE) Mission
TRACE enables solar physicists to study the connections between fine-scale magnetic fields and the associated plasma structures on the Sun.
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| Ulysses Mission
A mission to study the Sun at all latitudes.
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| Viking
The Viking Mission to Mars: Determining whether life ever existed on Mars.
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| Voyager - The Interstellar Mission
Voyager 1 and Voyager 2 journey to study the region in space where the Sun's influence ends and the dark recesses of interstellar space begin.
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