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.
July 15, 1999
Black holes, neutron stars and other high energy phenomena were the focus of a NATO Institute held in Crete in June, 1999.
July 15, 1999
New images from the Hubble Space Telescope reveal an unprecedented number of colliding galaxies in a distant cluster 8 billion light years away.
July 14, 1999
Martin Weisskopf, Project Scientist for NASA's newest Great Observatory - the Chandra X-ray Observatory- talks about the upcoming July 20 launch, astronomy, cosmology, and our beautiful and surprising universe.
July 9, 1999
With the discovery of a bright optical flash during a gamma-ray burst in January 1999, and the advancement of observing technologies, it is now possible that amateur astronomers can make meaningful scientific contributions to the study of these enigmatic events. Find out how you can help in the quest to understand these distant objects, from the confines of your own back yard.
July 8, 1999
NASA Scientists announced today the results of dual-observations from the SOHO and Spartan satellites, describing how the solar wind achieves its high-speed of up to 500 miles per second - by "surfing" magnetic waves in the Sun's outer atmosphere.