A MYSTERIOUS hole on Mars could be harbouring alien life in an extensive network of underground tunnels, according to Nasa. From orbit, scientists have captured a deep pit on the Red Planet that ...

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath Earth’s surface, rock and mineral formations conceal a hidden brilliance. When ...

Astrobiologist Joshua Sebree of the University of Northern Iowa suggests that South Dakota's Wind Cave exhibits chemical similarities to Jupiter’s icy moon Europa.

What happens when Earth’s top predator is placed in a completely foreign environment? This mind-bending scenario explores ...

After a deadly snowfall kills millions, Juan Salvo and a group of survivors fight against a threat controlled by an invisible ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV) light, ...

Astrobiologist Joshua Sebree of the University of Northern Iowa suggests that South Dakota's Wind Cave exhibits chemical similarities to Jupiter’s icy moon Europa. Europa is a fascinating world ...

Which states would stand a fighting chance against an alien invasion and which would be more likely to crumble?

Maybe aliens like the sun ... the average duration, how many caves each state had, how much area was covered by forests or water, the available military and law enforcement as well as the number ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV ...