The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Interstellar object 3I/ATLAS is making its closest approach to Earth in just over a week from now, coming within 167 million ...

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

A small, icy traveler from deep space has just threaded its way through the inner Solar System, offering a fleeting but ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

Astronomers say 3I/ATLAS is so unusual that it is forcing a rethink of probability distributions used to model interstellar ...

The rare interstellar comet 3I/ATLAS is making its closest approach to Earth this week at a safe 167 million miles.

The interstellar object 3I/ATLAS has become one of the most talked-about space visitors of the year. It came from outside our solar system, and its size and path have made some scientists curious. One ...

Interstellar object 3I/ATLAS nears Earth, showing a rare anti-tail, changing brightness, and new clues about its origin, with ...

Interstellar objects like 3I/ATLAS are most likely to enter our solar system from two specific directions, a new study suggests. What does it mean for Earth? When you purchase through links on our ...