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flag NASA captures images of interstellar comet 3I/Atlas, the third such comet observed, as it passes near Mars and heads back into deep space.

flag NASA has released close-up images of 3I/Atlas, the third confirmed interstellar comet, discovered in summer 2025. flag Roughly 1,400 feet to 3.5 miles wide, it passed 18 million miles from Mars in November and will reach 167 million miles from Earth in mid-December. flag Observed by spacecraft and ground telescopes, 3I/Atlas offers rare insights into material from beyond our solar system.

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