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Holes in the head
Even with a highly skilled neurosurgeon, the most effective anesthesia, and all the other advances of modern medicine, most of us would cringe at the thought of undergoing cranial surgery today.
Physicist Stephen Hawking best known for his work on black holes
Stephen Hawking, who has died aged 76, was one of the world's leading physicists who inspired generations of scientists.
The Milky Way is filled with black holes
A theoretical survey of the population of black holes in our galaxy suggested there are tens of millions of black holes in the Milky Way —many more than astronomers expected to find. The findings suggest the Universe is full of black holes.
'Winds' from monster black holes can rapidly change temperature
Hot gas streaming out from the region around supermassive black holes can experience rapid and extreme changes in temperature, according to observations from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) telescope.
Astronomers find unusual alignment of supermassive black holes
Scientists have found a cluster of supermassive black holes in the distant universe, all spinning out radio jets in the same direction.

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