For decades, scientists have debated whether we should try to contact alien civilizations or stay silent and hope we’re left ...

A powerful and mysterious blast of radio waves that astronomers believed was a fast radio burst (FRB) from far beyond the ...

Pop culture is full of references to messages from outer space. Some of them were friendly attempts at communication, such as ...

Australia's unfinished Square Kilometre Array telescope is at risk of having its sensitive space observations distorted by ...

A NASA satellite that’s been orbiting as space junk since 1967, Relay 2, emitted an unexpected, powerful radio burst that ...

Humans might not know of any intelligent beings beyond Earth, but if they exist, they might already know about us. New ...

If aliens are out there, then our radar systems are putting on quite an electromagnetic show for them. Here’s what you’ll learn when you read this story: The SETI Institute’s goal is to lead a science ...

First thought to have originated from a distant cosmic object, the short and intense signal was actually coming from much closer to home.

Astronomers detected a powerful radio signal from near Earth, initially believed to be from a new space object. Check what they found next.

This meant it was probably just radio-frequency “interference” – an astronomer’s term for human-made signals that corrupt ... a tiny piece of space debris – similar to that experienced by the James ...

"Our work supports both the scientific quest to answer the question 'Are we alone?' and practical efforts to manage the ...

A NASA-funded plan to build a large radio telescope on the moon's far side is nearing final approval and could become a reality by the 2030s, researchers say. The ambitious project will help ...