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Of all the observatories that will cast their eyes on the moon this July 31, the Submillimeter Wave Astronomy Satellite has the best chance of detecting a water plume, says Goldstein.
Mizuno, "Millimeter and Submillimeter Wave Quasi-Optical Oscillator with Multi-Elements," MTT-S Digest, 1990, pp.
Orenstein, "Terahertz time-domain spectroscopy," Millimeter and Submillimeter Wave Spectroscopy in Solids, J.
So far two satellites have been launched to search for cosmic clouds of water and oxygen: the Infrared Space Observatory (ISO), operated by ESA from November 1995 until May 1998, and the Submillimeter Wave Astronomy Satellite (SWAS), which reached orbit in December 1998 (S&T: April 1999, page 28) and will continue operations possibly until 2004.
Due to the flourishing development of nowadays technology as well as the saturation in the microwave spectrum, service providers and system designers are begining to implement and design circuits at higher frequencies, one common election being the millimeter and the submillimeter wave bands.
The telescopes considered most likely to detect water were in orbit: the Hubble Space Telescope looked for OH radicals at the ultraviolet wavelength of 3085 angstroms, and the Submillimeter Wave Astronomy Satellite searched for neutral water molecules at 538 microns.
Melnick notes that NASA's Submillimeter Wave Astronomical Satellite, now scheduled for launch in January 1999, will continue the studies of water vapor in Orion and search other parts of the Milky Way.
This week, he and his collaborators had hoped they would finally be celebrating the launch of their $60 million Submillimeter Wave Astronomy Satellite (SWAS).
The Submillimeter Wave Astronomy Satellite (SWAS) was placed in storage several years ago when its Pegasus launch vehicle ran into problems.
Carried aloft by a Pegasus rocket, NASA's Submillimeter Wave Astronomy Satellite (SWAS) is expected to record the distribution of water, molecular oxygen, carbon, and carbon monoxide in dense molecular clouds that lie within 3,000 light-years of Earth, including those within the constellations Orion, Taurus, Ophiuchi, and Perseus.
Submillimeter Wave Astronomy Satellite (SWAS) will chart the distribution and abundance of water vapor, molecular oxygen, carbon, and carbon monoxide in any large stellar nursery within 3,000 light-years of Earth.
Next comes a Submillimeter Wave Astronomy Satellite in mid-1993, aimed at helping decipher how molecular clouds collapse to form stars and planetary systems.