Researchers have confirmed the mass of a free-floating planet thanks to a lucky convergence of ground- and space-based ...
Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...
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Is 3I/ATLAS a natural comet or an alien probe? Harvard's Avi Loeb explores the mystery of its sunward 'anti-tail' and what it ...
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First ever X-ray of 3I/ATLAS reveals 400,000 km glowing ‘alien halo’
In late November 2025, astronomers captured an unprecedented cosmic signature: the first X-ray emissions ever detected from ...
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