The Cygnus X-1 black hole formed when a large star caved in. It is pulling matter from the nearby blue star.
Black holes are a scientific mystery – there is so much still to discover. The first image of a black...
Less than 20 years ago, whether planets existed in other solar systems was pure speculation. Since 1995, over 500 planets...
Our Solar System, and all other star systems, form from a collapsing nebula. Often called stellar nurseries, nebulae are the...
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