In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

The universe is at it again; scientists have been baffled by a discovery that turns all the knowledge they have on planetary ...

‘Dig This Real were keen for me, being a fellow Brit, to talk to someone who was being called the UK’s real-life Fox Mulder!’ ...

A team from the Excellence Cluster ORIGINS at the Ludwig-Maximilians-Universität München, Germany and the Max Planck ...

A new generation instrument designed to probe the atmospheres of distant worlds is nearing operational readiness, marking a ...

Ryan Gosling's "Project Hail Mary" costar is a high-maintenance creature with his own "glam squad." The actor introduces us to Rocky, a lovable alien.

Solar winds and coronal mass ejections may scatter narrow signals, making them harder for Earth-based telescopes to detect. The SETI Institute uses radio telescopes to search for signs of intelligent ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

Astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spacecraft. 3I/ATLAS was confirmed as the third known object to enter our solar system from interstellar ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

The mystifying invader 3I/ATLAS, a comet that had been capturing the attention of expert and amateur astronomers alike, passed Earth early Friday morning, making its closest approach to our planet as ...

Earth may owe some of its properties to a nearby star that blew up just as the solar system was forming. This pattern, which saw a supernova bubble envelop the sun and shower it with cosmic rays, may ...