NASA’s Chandra Reveals Origin of Key Cosmic Explosions


Composite image of M31, also known as the Andromeda galaxy.

New findings from NASA’s Chandra X-ray Observatory have provided a major advance in understanding a type of supernova critical for studying the dark energy that astronomers think pervades the universe. The results show mergers of two dense stellar remnants are the likely cause of many of the supernovae that have been used to measure the accelerated expansion of the universe.

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