08:51, 15 JAN 2016 UPDATED 10:15, 15 JAN 2016 The Mirror
BY JASPER HAMILL
Major Tim says he's confident that we're not alone in the universe and makes an astonishing prediction
It's life Tim, but not as we know it: Peake is a 'firm believer' in extraterrestrial life
Astronaut Tim Peake is set to join a handful of British astronauts who have performed a space walk.
But the Chichester-born spaceman has said that his incredible journey is just one small step in a longer mission which could eventually result in humans discovering life on another planet.
Peake said he was confident scientists would soon crack the "big question" of whether we are alone in the universe.
"There is a high chance we will soon discover there was - or is - life in our solar system," the 43-year-old told Mirror Online.
"I would be very surprised if there wasn't life elsewhere in the universe."
However, the astronaut said he didn't expect little green men to suddenly pop up from the craters of the Red Planet.
"Single cell life forms might be found on Mars," he continued.
Tim also suggested extraterrestrial organisms might be found on the moons of Saturn or Jupiter, some of which are thought to hide vast oceans of water.
He said: "Wherever there is water, there is the possibility of life."