New polarimetry data on interstellar comet 3I/ATLAS reveals bizarre refractory dust, proving this alien visitor formed in a ...

Harvard's Avi Loeb says a rare sun alignment on 22 January could prove interstellar visitor 3I/ATLAS is an alien spaceship.

Comet 3I/ATLAS has arrived in the inner solar system behaving as if the usual rules of comet physics were optional. Instead ...

The third known interstellar comet to visit our solar system has just done something no one had seen before: it lit up in X-rays, surrounded by a ghostly halo roughly 400,000 kilometers across. That ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single massive star or pair of stars about 1,000 light-years away in space. This ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...

For one, it came down to timing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It came from outer space. Interstellar space, to be precise.

Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet. When you purchase through links on our site, ...

The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

The most sensational story of the year for astronomers has been the discovery of the comet 3I/ATLAS, which was first observed on July 1, 2025 by NASA's Asteroid Terrestrial-impact Last Alert System ...

An interstellar comet is passing through our solar system: here is everything you need to know. Comet 3I/ATLAS represents just the third object in history to be known to have entered our solar system ...

Interstellar comet 3I/ATLAS made its closest approach to Earth on Friday, Dec. 19. The comet will pass within about 170 million miles of our planet and poses no danger. While not visible to the naked ...