More than 3.5 billion years ago, the Earth was not the hospitable world we know today. The atmosphere lacked oxygen, the seas ...

Tiny tubes just one atom thick, long thought to be the product of high‑tech laboratories, have turned up in a scoop of dirt from the far side of the Moon. The discovery, made in lunar soil returned by ...

The interstellar visitor 3I/ATLAS has turned into one of the strangest shows in the sky, shifting to a vivid blue and ...

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.