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Astrophysics Science Division | Sciences and Exploration

ASD Archived Project Websites

These websites are kept for archival purposes only and are no longer updated.

ACCESS
ACCESS, a galactic cosmic ray detector, planned to help us understand the origin, composition, distribution and life span of elementary particles in our galaxy.
ARCADE
The Absolute Radiometer for Cosmology, Astrophsyics, and Diffuse Emission (ARCADE) was designed to look back to the dawn of the Universe to observe the transition out of the "cosmic dark ages" as the first stars ignited in nuclear fusion and the Universe began to resemble its current form.
Coded Aperture Imaging graphic
This is a short review on coded aperture imaging.
EPACT graphic
The Energetic Particles: Acceleration, Composition and Transport (EPACT) investigation was designed to make comprehensive observations of solar, interplanetary, and galactic particles over wide ranges of charge, mass, and intensity using a combination of 8 different particle telescopes.
EXIST
The Energetic X-ray Imaging Survey Telescope (EXIST) was a proposed hard X-ray imaging all-sky deep survey mission and was recommended by 2001 Report of the Decadal Survey.
GALEX
The Galaxy Evolution Explorer (GALEX) was a NASA Small Explorer Mission launched April 28, 2003. GALEX performed the first Space Ultraviolet sky survey.
GOODS
GOODS data track the formation and evolution of galaxies across cosmic time and map the history of universal expansion using high redshift supernovae.
GRIS
The Gamma-Ray Imaging Spectrometer (GRIS) has been an extraordinarily successful balloon-borne instrument which uses germanium detectors for high resolution gamma-ray spectroscopy.
Carina Nebula
The Hubble Space Telescope was deployed from the Space shuttle Discovery during STS-31 on April 25, 1990. Hubble imagery has both delighted and amazed people around the world and has rewritten astronomy textbooks with its discoveries.
HST Servicing Mission 3A
Servicing Mission 3A successfully replaced equipment and performed maintenance upgrades to the Hubble Space Telescope.
HST Servicing Mission 3B
Servicing Mission 3B is actually the fourth visit to Hubble. NASA split the original Servicing Mission 3 into two parts and conducted 3A in December of 1999. The crew of Space Shuttle Columbia conducted Servicing Mission 3B in February 2002 and performed five spacewalks over an 11-day mission.
HST Servicing Mission 4
Launched in April 1990 and with almost 20 years of historic and trailblazing science already accomplished, the Hubble Space Telescope was reborn with Servicing Mission 4 (SM4).
InFOCuS
InFOCµS was a balloon-borne instrument incorporating breakthroughs in focusing optics and detectors to achieve order of magnitude improvements in both hard X-ray sensitivity and imaging resolution, with high resolution spectroscopy.
ISOMAX
The Goddard ISOMAX experiment was a state-of-the art superconducting magnetic mass spectrometer constructed for the purpose of measuring the abundance of isotopes in the cosmic radiation. Cosmic radiation is the term used for high energy particles coming from the Sun, the Galaxy, and beyond.
IXO
Prior to its termination the International X-ray Observatory (IXO) was ranked fourth among large missions in the 2010 Astrophysics Decadal Survey, "New Worlds, New Horizons." In response, NASA has undertaken an X-ray mission concepts study to determine if alternative approaches exist to accomplish IXO's high ranking scientific objectives over the next decade.
NASA
MGEANT is a CERNLIB/GEANT based generic multi-purpose Monte-Carlo simulation package appropriate for gamma-ray astronomy which allows the rapid prototyping of a wide variety of detector systems.
NIGHTGLOW
Even at night, the Earth's atmosphere glows from reflected starlight, moonlight, man-made ultraviolet (UV) light and molecular processes. This instrument was designed to measure this UV "nightglow", hence the mission name, NIGHTGLOW!
OWL
OWL (Orbiting Wide-angle Light collectors) was a proposed space-based mission to determine the energy, direction and interaction characteristics of large numbers of high energy cosmic rays.
TIGER
TIGER (Trans-Iron Galactic Element Recorder) was a balloon-borne NASA instrument that had three successful flights: one from Fort Sumner, NM (summer of 1997), and two from Antarctica (December 2001 - January 2002 and December 2003 - January 2004). The TIGER instrument measured the elemental composition of cosmic rays heavier than iron.
XRS Detector
XRS-2 was a new generation of X-Ray Spectrometer. It was to measure the spectrum of celestial objects in the "soft" X-ray range (200 to 10,000 eV), to much higher resolution than has been possible up to now.