NASA's Hubble Space Telescope caught a glimpse of 3I/ATLAS – in July and on Nov. 30, 2025.

An ESA orbiter bound for Jupiter also observed the interstellar comet 3I/ATLAS.

How big is 3I/ATLAS interstellar comet? Estimates range from a few hundred feet to a few miles across.

Ever since the spotted , people have been fascinated with the interstellar comet.

In July, after coming from elsewhere in the Milky Way galaxy. Roughly six months later, it's projected to pass by Earth.

For months, 3I/ATLAS has attracted plenty of attention – from reality TV star Kim Kardashian, actress Sarah Paulson and interim NASA administrator Sean Duffy to talk of . Currently, 3I/ATLAS is on a cosmic journey that will one day take it beyond our sights forever.

Below is what to know about 3I/ATLAS and a countdo

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