Speed matters. When an X-ray photon excites an atom or ion, making a core electron jump onto a higher energy level, a ...
In a study published in Physical Review Letters, physicists have demonstrated that black holes satisfy the third law of ...
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James Webb telescope may have discovered the earliest, most distant supermassive black hole ever seen
The James Webb telescope may have detected the universe's earliest and most distant known black hole at the heart of galaxy ...
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