1999
Learning how to make a clean sweep in space
Nov. 30, 1999
How do you clean dust in space where a vacuum cleaner won't work? A solution starts with understanding how a single grain of dust - in this case, like that from rocket motors - behaves in space.
Dashing and Coasting to the Interstellar Finish Line
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.
Chandra peers into the Large Magellanic Cloud
Nov. 2, 2006
Life on the Edge
Jan. 13, 1999
The shape of extraterrestrial life
May 19, 1999
features
March 31, 2010
Welcome to the Thunder Dome
April 26, 1999
Climate scientists report that urbanization has altered weather patterns over Atlanta, Georgia. Data collected for the last 25 years link deforestation and the use of heat-absorbing materials with oddities such as severe morning weather.
Lightningfollows the Sun
June 10, 1999
Tantalizing findings show patterns of Lightningvary with the Sun, El Nino, and other phenomena. Such correlations could provide a way to monitor global changes.
Leonids Sample Return Mission Update
April 1, 1999
Scientists will describe initial results from a program to catch meteoroids in flight at the NASA/Ames Leonids Workshop April 12-15, 1999.
A Richter Scale for Cosmic Collisions
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.