Astronomers are always tracking asteroids and comets in space near Earth, and some of them are from unfathomably far away in the outer solar system. However, scientists may have spotted the first such ...

As the calendar ticks towards 19 December, online doomsday fears surrounding the interstellar comet 3I/ATLAS show little sign of abating, despite firm scientific rebuttals. Nasa has stressed that this ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our solar system—only the third ever spotted, though scientists suspect many more may slip past unnoticed. The ...

New images from the Hubble telescope show an extrasolar entity as it hurtles through our solar system at speeds of more than 130,000 mph (210,000 km/h).

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...