What: Comet 3I/ATLAS reached perihelion on October 30, 2025. This special SETI Live explored what scientists have learned about its origin, chemistry, and trajectory ...

There’s a visitor in town, and its name is 3I/ATLAS. The presumed interstellar comet presents a rare opportunity for astronomers to study an object born a long time ago in a star system far, far away.

A scientist says self replicating alien probes may already be hidden in the Solar System, possibly on the Moon, leaving ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system. The Hubble Telescope and its Wide Field Camera 3 got an incredible view of the comet ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...

The comets A6 (Lemmon) and R2 (SWAN) are visitors from the chilly fringes of our solar system, and could even be visible at the same time. By Marina Koren If you like comets, this month is shaping up ...

WASHINGTON, Oct 15 (Reuters) - The rings of Saturn are among the wonders of our solar system, with a diameter of roughly 175,000 miles (280,000 kilometers) as they encircle the giant planet. But ...

It’s probe-ably nothing. The newly discovered Manhattan-sized interstellar object zooming through our solar system has been identified as a comet — but two Harvard scientists argue there is reason to ...