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WATCH: 3I/Atlas interstellar comet PHOTOS REVEALED by NASA
Posted
November 19, 2025
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November 19, 2025
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51:58Now Playing3i/atlas FROM NASA:
Comet 3I/ATLAS is the third known object from outside our solar system to be discovered passing through our celestial neighborhood. Astronomers have categorized this object as interstellar because of the hyperbolic shape of its orbital path. (It does not follow a closed orbital path about the Sun.) When the orbit of 3I/ATLAS is traced into the past, the comet clearly originates from outside our solar system.
Comet 3I/ATLAS poses no threat to Earth and will remain far away. The closest it will approach our planet is about 1.8 astronomical units (about 170 million miles, or 270 million kilometers). 3I/ATLAS reached its closest point to the Sun around Oct. 30, 2025, at a distance of about 1.4 au (130 million miles, or 210 million kilometers) — just inside the orbit of Mars.
The interstellar comet’s size and physical properties are being investigated by astronomers around the world. 3I/ATLAS should remain visible to ground-based telescopes through September 2025, after which it will pass too close to the Sun to observe. It will reappear on the other side of the Sun by early December 2025, allowing for renewed observations.
We are learning more tonight after NASA says they have discovered an interstellar comet that’s wandered into our own backyard. The quick-moving object was spotted by NASA with the ATLAS telescope in Chile over the summer, and they have now confirmed it was a comet from another star system.
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