Purple is the new green, as far as aliens are concerned, anyway. If you were asked to imagine an alien planet, it would be reasonable to imagine a green earth-like rock orbiting somewhere in a distant ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

The interstellar object 3I/ATLAS has developed a distinct greenish glow as it makes its final high-speed passage through the inner Solar System, a phenomenon that has captivated astronomers and ...

The universe just sent us a problem. It's a fast-moving, utterly bizarre object from outside our solar system, and it has baffled researchers by dramatically changing its colour as it hurtles towards ...