7 beautiful Hubble images of nebulae shared by NASA
This Hubble mosaic is the highest resolution image ever made of the entire Crab Nebula, which is located 6,500 light-years away. These opaque, dark knots of gas and dust called "Bok globules" are ...
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What Is a Black Hole? Astronomy's Most Mysterious Object, Explained
Why Do Black Holes Form? Black holes form when a huge amount of matter is squeezed into a very small space. Cram enough ...