Scientists using the Chandra X-ray telescope have uncovered new details about the famous supernova remnant Cassiopeia A.

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A mysterious remnant from a rare type of supernova recorded in 1181 has been explained for the first time. Two white dwarf stars collided, creating a temporary 'guest star,' now labeled supernova (SN) ...

Cambridge, MA – Since Galileo first pointed a telescope at the sky 400 years ago, a myriad of technological advances have allowed astronomers to look at very faint objects, very distant objects, and ...

Astronomers have discovered a strange new signal coming from an exploding star — a “chirp” that speeds up over time, similar to the signals seen when black holes collide. The unusual pattern appeared ...

For the past year, astronomers have been trying to explain its origin and presence in the well-studied supernova remnant. The new image, unveiled on Monday (Jan. 8) at the American Astronomical ...