It may sound completely out of a science fiction film, but a team of American and Indian scientists have discovered three entirely new lifeforms existing in different locations aboard the International Space Station.
The team investigated four different strands of bacteria found between 2015 and 2016 on the ISS and identified one of them. The other three were completely unique to mankind's scientific knowledge.
But rather than being some kind of science fiction horror, the scientists hope that the discovery will help them learn how to grow food on future deep space missions.
The three unique bacteria strands were found in an overhead panel, on the station viewing deck, and on the crew's dining table.