March 5, 1999
20 years ago today, the first blast of gamma-rays from these enigmatic objects was first observed. Ever since, scientists have been unraveling what happened - and discovering radical new members of the cosmos.
March 3, 1999
NASA scientists are developing ways to mine and process iron ore for energy production on Mars, creating technologies needed to support a human colony.
March 2, 1999
Scientists look ahead at a new telescope which could lead to observations of violent magnetic fields on the sun with resolution 10 times better than the best solar instrument today.
Feb. 26, 1999
As February winds down with no full moon at all, sky watchers are looking forward to two full moons in March and the second Blue Moon of 1999.
Feb. 22, 1999
Astronomers plan to combine radio images of galaxy clusters with new data from the Chandra X-ray Observatoryand open a new window on the history of the Universe.
Feb. 19, 1999
Scientists discuss results from the US MicrogravityPayload 4, which flew on the Space Shuttlelast year. Highlights include Microgravitycrystal growth experiments and low-gravity fluid dynamics.
Feb. 17, 1999
Recent discoveries of Pluto-like objects in the outer solar system have sparked debate about the nature of the tiniest "planet."
Feb. 16, 1999
A unique camera that will take some of the first pictures of Earth's invisible magnetic shield is being prepared for flight.
Feb. 12, 1999
NASA's next Great Observatory, the Chandra x-ray telescope, moved one step closer to launch this week after being installed in a clean room for final tests and other work at the Kennedy Space Center.
Feb. 10, 1999
Astronomers have released a new Hubble photograph of a gamma-ray burst's fading optical counterpart. The relic fireball appears to be embedded in a faint, irregular galaxy.