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‘Immortal stars’ could feed on dark matter at the heart of the Milky Way

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A dark golden sphere with dark red circles radiating from it

“All good things must come to an end.” That saying applies both in the cosmos and on Earth. We know that stars, like everything else, must die. When they run out of the fuel needed for nuclear fusion in their cores, stars of all sizes collapse under their own gravity and die, forming a dense … Read more

Galaxies actively forming in the early universe feed on cold gas

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Researchers analyzing data from NASA’s James Webb Space Telescope have identified three galaxies that may have been actively forming when the universe was just 400 to 600 million years old. Webb’s data shows that these galaxies are surrounded by gas that the researchers suspect is composed almost exclusively of hydrogen and helium, the earliest elements … Read more