A planet that suffers scorching 475°C (900°F) temperatures beneath a thick acidic atmosphere may be the last place you’d expect alien life in our Solar System.

But one NASA scientist claims that extraterrestrials are most likely hiding on Venus amid conditions that are unbearable for humans.

The new theory was put forward by Dr Michelle Thaller, a research scientist at the US-based Goddard Space Flight Centre.

She says that ‘possible signs of life’ have already been seen within the carbon-dioxide filled atmosphere, adding that she was absolutely certain that life exists somewhere.