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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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