July 28, 1999
Lunar Prospector has survived the July 28 partial Lunar Eclipseand is on track for a planned collision with The Moonon July 31. This story includes a video clip of the eclipse as seen from Australia and new simulations of the July 31 impact.
July 27, 1999
NASA and Russian scientists are setting out to Siberia to hunt small game, microbes whose life styles may hold clues to the possibilities for life elsewhere in the solar system. Their trek is part of NASA's Astrobiologyprogram.
July 26, 1999
This Wednesday's partial Lunar Eclipseposes a last-minute threat to Lunar Prospector, which is scheduled three days later to crash into The Moonin search of water.
July 23, 1999
Blame Newton and Kepler: Chandra's beautiful early morning launch will place it into an orbit unlike that of NASA's other Great Observatories.
July 22, 1999
By comparing several techniques and combining aspects of a couple of the best, scientists better predict the Sun's weather. Solar Weatheraffects our weather, satellites in orbit, electrical power systems, and radio and television communications.
July 22, 1999
Planetary scientists have developed the Torino Scale, a new means of conveying the risks associated with Asteroidsand Cometsthat might collide with the Earth.
July 21, 1999
Professional and amateur astronomers are preparing to observe The Moonon July 31st when Lunar Prospector plunges into a permanently shadowed crater in
July 20, 1999
Dying magnetars, supernovae, and the future of the universe are on tap for NASA's Chandra X-ray Observatory, scheduled for launch July 20, 12:39 a.m. EDT.
July 19, 1999
Scientists believe a sudden slowdown of a spinning neutron star is due to a massive starquake and a huge release of gamma-ray energy.
July 16, 1999
Newly released video shows a flurry of Leonids in 1997 that briefly rivaled the great meteor storm of 1966.