Theoretically, it’s impossible for us to perceive a 4D creature. That is, unless it broke into our three-dimensional reality.

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

Northwestern University engineers have developed the first modular robots with athletic intelligence. They can be combined ...

Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the source of potential signals than previously thought. Conditions around ...

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

Red dwarfs make up the vast majority of stars in the galaxy. Such ubiquity means they host the majority of rocky exoplanets ...

Ridley Scott backed an ambitious HBO sci-fi drama that ended far too early. Here's why the sudden cancellation still stings years later for fans.

Rep. Seth Moulton's State of the Union guest reportedly referenced in sealed police reports that Massachusetts authorities ...

Ridley Scott's exceptionally influential sci-fi film Alien is a hit on streaming once again. Find out more here.

The truth about aliens may be out there, but don't expect them to look like little green men, RadarOnline. com can report.

A Russian FPV drone was destroyed after an encounter with a weird new Ukrainian weapon. Is this a high-powered laser or something else entirely?

The machines are built from autonomous modules that can be snapped together in a variety of forms ...