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NASA Science Missions

Past

Researchers believe that much of the energy released during a flare is used to accelerate, to... View Mission

Past

SAMPEX is the first of NASA's Small Explorer (SMEX) missions. SAMPEX was designed to study the... View Mission

Past
SET-1 Mission Image

The Space Environment Testbeds (SET) Project performs flight and ground investigations to... View Mission

Past
illustration of snow spacecraft with magnetic field in background

The Student Nitric Oxide Explorer (SNOE) is a small scientific spacecraft designed, built, and... View Mission

Operating

SOHO, the Solar and Heliospheric Observatory, is a project of international cooperation between... View Mission

Operating

The Solar Dynamics Observatory (SDO) is the first mission and... View Mission

Operating

This mission addresses how the sun creates and controls the giant bubble of magnetic fields... View Mission

Operating

SORTIE will investigate the underlying causes behind the appearance of plasma structures in the... View Mission

Past
Spartan 201 Mission Image

The Spartan spacecraft were a series of experiments carried by the Space Shuttle. They addressed... View Mission

Past
ST5 Mission Images

The ST5, or Nanosat Constellation Trailblazer mission, is the fourth deep space mission in our... View Mission

Past
illustration of ST6 spacecraft with beam scanning surface of earth

Since the dawn of the space age, unmanned spacecraft have flown blind, with little or no ability... View Mission

Operating

STEREO (Solar TErrestrial RElations Observatory) is the third mission in NASA's Solar... View Mission

Future
SunRISE Mission

SunRISE will investigate how solar energetic particles are accelerated and released into... View Mission

Operating

TBEx will study how the dynamics and processes in the troposphere can act to cause variability... View Mission

Operating

THEMIS answers longstanding fundamental questions concerning the nature of the substorm... View Mission

Operating

Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) explores the Earth's... View Mission

Past

The objective of the Transition Region and Coronal Explorer (TRACE) satellite was to explore... View Mission

Past
TSS Mission Image

The Tethered Satellite System (TSS) consists of a satellite, a conducting tether, and a tether... View Mission

Past

The Two Wide-angle Imaging Neutral-atom Spectrometers missions, TWINS-A and TWINS-B, provide a... View Mission

Past

The primary mission of the Ulysses spacecraft was to characterize the heliosphere as a function... View Mission

Past

The Van Allen Probes are designed to help us understand the Sun’s influence on Near-Earth space... View Mission

Operating

The twin Voyager 1 and 2 spacecraft are exploring where nothing from Earth has flown before. As... View Mission

Operating

The Wind spacecraft is the first of two U.S. missions of the Global Geospace Science (GGS)... View Mission

Past
Yohkoh Mission Image

The Yohkoh Mission is a Japanese Solar mission with US and UK collaborators. It was launched... View Mission