Since time immemorial, humans have often wished they could curl up and sleep away those cold winter days like their furry friends, but that dream could one day become a reality with scientists investigating new ways for astronauts to hibernate in space.

According to Leopold Summerer, the head of the advanced concepts team at the European Space Agency, research could put “some science fiction into the realm of science reality” within our lifetimes.

Taking lessons from the techniques used by animal hibernators, sciences are already using some of them in experimental medical therapies such as therapeutic hypothermia, which involves lowering the body’s temperature for several days at a time, to help treat people with traumatic brain injuries.

Trials are now being conducted to see whether there was a way to keep astronauts in a sleeplike state for days or weeks using temperature without any ill effects, something that may be required for deep space travel.

Summerer told the Washington Post: “It doesn't mean we will have hibernating astronauts anytime soon, but we are learning from nature how to understand some of the things that happen to animals during hibernation, such as preventing bone loss or preventing muscle loss. This is already something that would be a great benefit for long-distance space flight.”

NASA funded a study last year to study the idea of astronaut hibernation. The proposed benefits include a cut in food and water required on the spacecraft, reduction in waste and less space need for exercise and entertainment.

Putting the crew to space might also minimize the psychological challenges associated with deep space flight.

In recent years, NASA has invested millions into studying the effects of long term effects of living in space.

Last year, it announced it would be conducting a study on two identical twins to see how space affects the body.

Scott Kelly, 50, has been sent to the International Space Station for an entire year, twice the duration of a normal stay on the facility, while his identical twin brother Mark remains on the ground.