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Operating Missions

Magnetospheric Multiscale (MMS) Mission

MMS Mission Launched March 12, 2015 at 10:44pm
Phase – Operating

The Magnetospheric Multiscale (MMS) mission is a Solar Terrestrial Probes mission comprising four identically instrumented spacecraft that will use Earth’s magnetosphere as a laboratory to study the microphysics of three fundamental plasma processes: magnetic reconnection, energetic particle acceleration, and turbulence. These processes occur in all astrophysical plasma systems but can be studied in situ only in our solar system and most efficiently only in Earth’s magnetosphere, where they control the dynamics of the geospace environment and play an important role in the processes known as “space weather.”
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Solar Terrestrial Relations Observatory (STEREO) Mission

STEREO Mission Launched October 25, 2006
Phase – Operating

STEREO (Solar TErrestrial RElations Observatory) is the third mission in NASA’s Solar Terrestrial Probes program (STP). This two-year mission will provide a unique and revolutionary view of the Sun-Earth System. The two nearly identical observatories - one ahead of Earth in its orbit, the other trailing behind – will trace the flow of energy and matter from the Sun to Earth as well as reveal the 3D structure of coronal mass ejections and help us understand why they happen. STEREO will also provide alerts for Earth-directed solar ejections, from its unique side-viewing perspective adding it to the fleet of Space Weather detection satellites.
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Hinode (Solar-B) Mission

Hinode (Solar-B) Mission Launched September 23, 2006
Phase – Operating

The Hinode (Solar-B) is a highly sophisticated observational satellite equipped with three advanced solar telescopes. It was launched on September 22, 2006. Its solar optical telescope (SOT) has an unprecedented 0.2 arcsec resolution for the observation of solar magnetic fields. It would resolve a feature with the size of 50cm, if it observed the Earth. The X-ray telescope (XRT) has a resolution of three times as high as Yohkoh, and the EUV imaging spectrometer (EIS) has sensitivity ten times as high as the ESA SOHO instrument. These X-ray and EUV telescopes would reveal the heating mechanism and dynamics of the active solar corona.
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Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) Mission

TIMED Mission Launched December 7, 2001
Phase – Operating

Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) explores the Earth’s Mesosphere and Lower Thermosphere (60-180 kilometers up), the least explored and understood region of our atmosphere. It is known that the global structure of this region can be perturbed during stratospheric warmings and solar-terrestrial events, but the overall structure and dynamics responses of these effects are not understood. Advances in remote sensing technology employed by TIMED will enable us to explore this region on a global basis from space.
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