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Physics & Astronomy Facts

A composite Chandra X-ray (blue) and Palomar infrared (red and green) image of the supernova remnant W49B.
New Evidence Points to a Gamma-Ray Burst... In Our Own Backyard

Only 35,000 light years away lies W49B, the supernova remnant left over from the cataclysmic burst. New evidence pointing to a gamma ray burst origin for this remnant was discovered by X-ray data from ...

Right Ascension & Declination

Right Ascension (abbreviated R.A.) and Declination (abbreviated Dec) are a system of coordinates used by astronomers to keep track of where stars and galaxies are in the sky. They are similar to the s ...
A 53-hour Chandra observation of the central region of the Perseus galaxy cluster has revealed wavelike featuresthat appear to be sound waves.
Black Hole Sound Waves

Astronomers using NASA's Chandra X-ray Observatory have found, for the first time, sound waves from a supermassive black hole. The 'note' is the deepest ever detected from any object in our Universe. ...

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