AUSTIN, Texas — Astronomers have used the Hubble Space Telescope to see closer to the center in our neighboring Andromeda galaxy than in any other galaxy except our own. In doing so, they dramatically ...

used as a cross-check to determine the position of X-ray sources near the center of the Andromeda galaxy to an accuracy ten times greater than before.

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In a study published in The Astrophysics Journal, a Michigan State University researcher used the NASA Chandra X-Ray Observatory telescope to detect X-rays originating from a black hole. Every large ...

Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from Germany, France and Sweden show that most of the (dark) matter beyond the Local ...