Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

It catches very low frequency radio waves made by lightning, solar storms and charged particles moving through Earth’s ...

Using emerging radio techniques refined during and after the Second World War, the astronomers detected a powerful radio ...

Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter ...

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” – Arthur C.

On a clear night, the sky may seem peaceful and empty. Yet beyond the stars visible to our eyes lies a universe so vast that it is difficult to imagine. Our gal ...

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...