Something strange is racing toward us from the vast darkness beyond our solar system, and it’s moving at a jaw-dropping speed of 135,000 miles per hour. Discovered on July 1, the object, now named ...

As the winter solstice approaches, Earth is preparing for a brush with a high-speed traveller from the furthest reaches of the cosmos. On Friday, 19 December, a gargantuan space object that has ...

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.

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology but found nothing beyond human-made interference. Even so, the ...