Sept. 2, 1999
Scientists continue to ponder one of our star's most closely guarded secrets - why does the solar corona get hotter farther from the Sun's surface?
Sept. 1, 1999
El Nino gets blamed -- rightly or wrongly -- for everything strange in the weather. One NASA scientist has found a relationship: El Nino apparently is related to a reduction in Atlantic hurricane severity.
Aug. 31, 1999
A series of major solar flares and a coronal mass ejection this past weekend could trigger geomagnetic storms and auroral displays visible at high latitudes.
Aug. 30, 1999
A century-old radiation detection tool may be pressed into service to see if neutrinos change flavor. The answer may change our models of subatomic particles and the universe.
Aug. 27, 1999
NASA has released new high resolution pictures of Jupiter's volcanic moon captured during Galileo's closest flyby since 1995.
Aug. 26, 1999
When the Chandra X-ray Observatorytook its "first light" image, it wasn't looking at just another star shining in the darkness. It was watching a foundry distribute its wares to the rest of the galaxy.
Aug. 25, 1999
Mars Polar Lander heads for a touch down near the Red Planet's south pole to study the history of martian climate.
Aug. 24, 1999
Who cares if it rains and the fish get wet? A Pacific Ocean rainfall experiment will have implications for global weather studies.
Aug. 19, 1999
A race to the edge of the solar system and into interstellar space could come out of a contract awarded recently by NASA for the University of Washington to develop an innovative space propulsion concept. The Mini-Magnetospheric Plasma Propulsion - M2P2 - would use the solar wind to push on a small imitation of the Earth's magnetosphere and accelerate the spacecraft to overtake the Pioneers and Voyagers and become the first manmade object to leave the solar system.
Aug. 18, 1999
The Cassini spacecraft has completed a highly accurate flyby of Earth, giving the spacecraft a velocity boost for its journey to distant Saturn.