Cox believes the glaciers on Pluto's surface hints at the possibility of a subterranean sea warm enough to host organic chemistry.
"New Horizons showed you that there may well be a subsurface ocean on Pluto, which means - if our understanding of life on Earth is even slightly correct, that you could have living things there," Cox told.
The New Horizons spacecraft completed a 3 billion mile journey across the Solar System and performed a flyby of Pluto in July.The spacecraft captured detailed images and other data of Pluto and also of its moons.
As New Horizons came within 7,800 miles of Pluto, it discovered what looked to be large mountains, which many now believe are made up of ice. These icy have led experts to suggest that they are being fed by subsurface oceans of liquid water, which rises to the surface and freezes upon contact with Pluto's -233 Celsius temperatures.
But although Pluto may be a good candidate for discovering alien life, Cox says it's unlikely to be the first place we look for it. Moons like Titan, Europa and Enceladus are all thought to share similar subsurface ocean conditions and most importantly, they're all a lot closer than Pluto.