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Astronomers have imaged the faintest planet ever seen from Earth, discovered by NASA's Webb telescope after more than a decade of searching.
A new scientific study suggests that the coldest stars in the Milky Way may actually be alien megastructures designed to harvest energy.
New observations of a Jupiter-sized planet surviving its dying star suggest a different future for our own solar system.
Astronomers have identified an interstellar comet, 3I/ATLAS, which may be far older than our own Solar System.