A Harvard astronomer has proposed a bold theory about a mysterious interstellar object that has been observed accelerating away from our solar system at high speed. This acceleration, he suggests, ...

3I/ATLAS interstellar comet, first photographed from Mars orbit in October 2025, carries water ice with deuterium levels more than ten times higher than any solar system comet. The James Webb Space ...

Scientists at the SETI Institute recently searched for technological signals from 3I/ATLAS, the third interstellar object observed in our solar system. Using the Allen Telescope Array (ATA) at the Hat ...

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Add Yahoo as a preferred source to see more of our stories on Google. NASA's Hubble Space Telescope observed interstellar comet 3I/ATLAS on November 30. - NASA/ESA/STScI, D. Jewitt/M.-T. Hui/J.

One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

Space agencies around the globe have launched an unprecedented wave of planetary defense exercises, all centered on a mysterious interstellar visitor that refuses to behave like anything scientists ...

See more of our coverage in your search results. Make New York Post a Preferred Source The photos are out of this world! NASA unveiled jaw-dropping high-res images of 3I/ATLAS on Wednesday as ...

Add Yahoo as a preferred source to see more of our stories on Google. An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar ...

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So far, we’ve had only 2I/Borisov and Oumuamua confirmed as interstellar. The mere prediction of more arrivals doesn’t address many issues that are very relevant. In our system, these things are ...