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Universe
Apr 5, 2002

, tidal waves, firestorms, and other traumas could spell disaster for civilization and possibly even for all of life on our planet. Right now, one NASA program is scanning...

Universe
Feb 28, 2000

smallest white dot). This gas glows in X-ray light because it has been heated to a temperature of millions of degrees by shock waves produced by supernova explosions and...

Sun
Apr 6, 2000

about how our planet's magnetosphere reacts to shock waves from the Sun. Spann is busy sifting through data from Polar now for a closer look at what happened during the storm...

Universe, ISS
Aug 11, 2017

billion electron volts, most cosmic rays come to us from beyond our solar system. Various lines of evidence, including observations from NASA's Fermi Gamma-ray Space...

Universe, Solar System
Dec 14, 1997

investigator. "It was smaller than average. Still, it adds to our volume of knowledge that eventually will let us decipher what these things are." Gamma rays are...

Universe, Solar System
Oct 13, 1998

strengthening evidence that the optical counterparts, the glow from fireballs that appear to be the aftermath of gamma-ray bursts in distant galaxies, are caused by...

Universe
Oct 16, 2008

oddball irregular galaxies over all the others. No one knows why. Another example: The first waves of star formation after the Big Bang should have produced an abundance of...

Earth
Dec 24, 2008

forecasts are especially crucial to boaters. They sure don't want to be surprised by high winds, 10-foot waves, and lightning strikes." Sea surface temperatures play an...

Universe
Aug 19, 2009

remnant posed for Chandra's official first light image. Scientists deduced that material blasted into space from the explosion crashed into surrounding material at 10 million...

Universe
Mar 25, 1998

. Pulsars - rotating neutron stars - are among the most intriguing objects in the sky. They were found in 1965 when radio astronomers discovered several objects that emitted...

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