Goddard Projects Directory

The search for H produced 6 results out of 249 records HEAO A Launch Date: 08/12/1977 The High Energy Astronomy Observatory-A (HEAO A) was the first in a series of three satellite observatories that will study X-rays and gamma rays. Its primary objective will be to map and survey the celestial sphere for X-ray and gamma-ray sources, to establish the size and precise location of X-ray sources to determine the contribution of discrete sources to the X-ray background, and to measure time variations of X-ray sources. Other Name(s):  High Energy Astronomical Observatory A, HEAO 1 |  Project Information  |  NSSDC Link  |  Additional URL 1  |  Additional URL 2  |  Image Gallery  |   HEAO B Launch Date: 11/13/1978 The High Energy Astronomical Observatory-B (HEAO B) was the first X-ray observatory to open the utilization of its facility to a larger astronomical community via a Guest Observer Program. Its primary objective was to study high energy universe, pulsars, neutron stars, black holes, quasars, radio galaxies, and supernovas. This observatory mission carried out over 5000 targeted observations. These observations, and their scientific outcome, lifted X-ray astronomy into the mainstream of astronomical research. Other Name(s):  High Energy Astronomical Observatory 2, Einstein |  Project Information  |  NSSDC Link  |  Additional URL 1  |  Additional URL 2  |  Image Gallery  |   Helios A Launch Date: 12/10/1974 The Helios A spacecraft was one of a pair of deep space probes developed by the Federal Republic of Germany (FRG) in a cooperative program with NASA. Its objective was to study the Sun from an orbit near the center of solar system. In addition, the mission would perform pioneering measurements of the interplanetary medium. Other Name(s):  Helios 1 |  NSSDC Link  |  Additional URL 1  |   Helios B Launch Date: 01/15/1976 The Helios B spacecraft was one of a pair of deep-space probes developed by the Federal Republic of Germany (FRG) in a cooperative program with NASA. The Helios B mission carried 11 instruments to study the Sun and its data collected provided new tools to scientists trying to discover the nature and origin of gamma-ray bursts. In addition, the mission was to make pioneering measurements of the interplanetary medium. Other Name(s):  Helios 2 |  NSSDC Link  |  Additional URL 1  |  Image Gallery  |   HST Launch Date: 04/24/1990 The Hubble Space Telescope (HST), one of NASA's Great Observatories, is a cooperative program of the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA) to operate a long-lived space-based observatory for the benefit of the international astronomical community. To accomplish this goal and protect the spacecraft against instrument and equipment failures, NASA had always planned on regular servicing missions. HST was the first scientific spacecraft designed to utilize the full capabilities of TDRSS, communicating over either multiple-access or single-access channels at any of the supported transmission rates. Other Name(s):  Hubble Space Telescope, Space Telescope |  GSFC Link  |  Project Information  |  NSSDC Link  |  Additional URL 1  |  Additional URL 2  |  Image Gallery  |  Educational Resource  |   HST Servicing Mission 3b / STS-109 Launch Date: 3/1/2002 The third Hubble Servicing Mission 3b and the Space Transportation System-109 (STS-109) primary purpose was to repair and refurbish the Hubble Space Telescope (HST). It involved the installation of a new science instrument, the Advanced Camera for Surveys (ACS), new rigid Solar Arrays (SA3), new Power Control Unit (PCU) and a new Cryocooler for the Near Infrared Camera and Multi-Object Spectrometer (NICMOS). STS-109 (3b) is the fourth servicing mission to the HST, which also boosted HST to a higher orbit to counter the effects of atmospheric drag on the satellite. Other Name(s):  Hubble Space Telescope Servicing Mission 3b |  GSFC Link  |  NSSDC Link  |  Additional URL 1  |  Additional URL 2  |  Image Gallery  |