April 21, 1999
The oldest known meteor shower peaks this week on Thursday morning, breaking a 3 month lull in meteor activity.
Jan. 27, 1999
For the first time, images of visible light from a cosmic explosion are captured by a robotic telescope while spectacular gamma-ray data are captured by orbiting satellites.
April 7, 1999
NASA scientists plan to 'breed' better spacecraft using artificial intelligence. Such a strategy mimics nature, and may be one of the most efficient methods of future spacecraft design.
Feb. 9, 1999
Dramatic new Hubble images show vast stellar disks where planets are born.
Dec. 15, 1999
Alerted by a supernova patrol, scientists have used NASA's Chandra X-ray Observatoryto capture a rare glimpse of X-radiation from the early phases of a supernova. Although more than a thousand supernovae have been observed by optical astronomers, the early X-ray glow from the explosions has been detected in less than a dozen cases.
Dec. 15, 1999
The 1999 Geminids dazzled observers in North America, making up for a weak display of Leonids one month earlier. Another meteor shower is just 3 weeks away.
Oct. 11, 1999
NASA's Galileo spacecraft has successfully zipped past Jupiter's moon Io, the most volcanic body in our solar system. This was the closest look at Io by any spacecraft, and Galileo's cameras were poised to capture the brief encounter.
April 28, 1999
First images, with twice as much detail as previous Landsat satellites, show Florida's panhandle, South Dakota, and a startlingly clear image of a jet contrail and its shadow on the ground.
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 21, 1999
Professional and amateur astronomers are preparing to observe The Moonon July 31st when Lunar Prospector plunges into a permanently shadowed crater in