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NASA Science Missions

Mission Key

  • Universe
  • Solar System
  • Sun
  • Earth
Operating

Advanced Composition Explorer (ACE) observes particles of solar, interplanetary, interstellar,... View Mission

Past
ACRIMSAT

The purpose of the Active Cavity Radiometer Irradiance Monitor III (ACRIM III) instrument is to... View Mission

Operating
ACT-America

Understanding the terrestrial carbon cycle is essential for diagnosing current and predicting... View Mission

Past
ADEOS Mission Image

Advanced Earth Observing Satellite (ADEOS) was the first international space platform dedicated... View Mission

Future
Illustration of AIDA-DART mission spacecraft

AIDA-DART is a dual-mission concept, involving two independent spacecraft – NASA’s Double... View Mission

Operating

Fifty miles above the ground, Earth's highest clouds form an icy membrane at the edge of the... View Mission

Past
AirMOSS

North American ecosystems are critical components of the global carbon cycle, exchanging large... View Mission

Operating

NASA's commitment to studying the Earth as a global system... View Mission

Past

Aquarius is a focused satellite mission to measure global sea surface salinity (SSS). Its... View Mission

Past
Illustration of Artemis mission spacecraft

Measures what happens when the Sun’s radiation hits our rocky moon, where there is no magnetic... View Mission

Past
ASCA Mission Image

ASCA (formerly named Astro-D) was Japan's fourth cosmic X-ray astronomy mission, and the second... View Mission

Future
ASCENDS Mission Image

ASCENDS will provide improved ability to predict/model long-term changes in the climate cycle... View Mission

Past
Astro 1 Mission Image

The "Astro Observatory" was developed as a system of telescopes that could fly multiple times on... View Mission

Past
ATLAS

ATLAS-1 experiments focused on four scientific disciplines: atmospheric science, solar science,... View Mission

Operating
ATOM

The Atmospheric Tomography Mission (ATom) will study the impact of human-produced air pollution... View Mission

Past
ATS

Applications Technology Satellite Program The Applications Technology Satellite (ATS) series was... View Mission

Operating
ATTREX

Stratospheric water vapor has large impacts on the earth’s climate... View Mission

Operating

NASA's Aura is a mission to understand and protect the air we breathe. With the launch of Aura... View Mission

Past
Barrel - Launching Balloons in Antarctica

BARREL is a series of balloon campaigns designed to supplement measurements from NASA’s Van... View Mission

Past
BXRT Mission Image

The Broad Band X-ray Telescope (BBXRT) was flown on the space shuttle Columbia (STS-35) on... View Mission

Future
Illustration of BepiColumbo mission spacecraft

BepiColombo will use two orbiters to study Mercury from unique vantage points looking for clues... View Mission

Operating
CALIPSO

The CALIPSO satellite was developed to help scientists answer significant questions and provide... View Mission

Past
CARVE

The carbon budget of Arctic ecosystems is not known with confidence since fundamental elements... View Mission

Operating
Illustration of Cassini spacecraft

Cassini completed its initial four-year mission to explore the Saturn System in June 2008 and... View Mission

Future

Compact Radiation Belt Explorer (CeREs) will help detect how electrons are energized and lost... View Mission

Past
CGRO Mission Image

The Compton Gamma Ray Observatory was the second of NASA's Great Observatories. Compton, at 17... View Mission

Past
CHAMP Mission Image

The CHAMP satellite was launched with a Russian COSMOS launch vehicle on July 15, 2000 and... View Mission

Operating

NASA's Chandra X-ray Observatory was launched and deployed by Space Shuttle Columbia on July 23... View Mission

Past
Chandrayaan-1 (M3) Mission Image

The Moon Mineralogy Mapper (M3) is a state-of-the-art imaging... View Mission

Past
CHIPS Mission Image

The Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) was a University-Class Explorer (UNEX)... View Mission

Past
CINDI Mission Image

The Coupled Ion-Neutral Dynamics Investigations (CINDI), a mission to understand the dynamics of... View Mission