A married couple is being sought to be sent on the first manned mission to Mars.
Dennis Tito, a billionaire financier who in 2001 became the first space tourist, has launched a project to send two civilians on "an historic journey" to the Red Planet in January 2018.
"We have not sent humans beyond the moon in more than 40 years. I've been waiting, and a lot of people my age, have been waiting. And I think it's time to put an end to that lapse," the Telegraph quoted Tito as saying in Washington on Wednesday.
The mission, a "return fly-by", in which the spacecraft would fly around Mars rather than land, would last for 500 days. It is expected to cost between 1 billion dollars and 2 billion dollars, which Tito is hoping to fund partly through television rights and by selling data to Nasa.
His organisation, Inspiration Mars, is planning to select a middle-aged couple who may have already had children and would be willing to risk the potential risk to their fertility of being exposed to radiation for a prolonged period.
They would be forced to spend a year and a half together in a 14ft x 12 ft Dragon space craft, accompanied by supplies ranging from more than a tonne of dehydrated food to 28kg of lavatory paper.
As for why they were specifically seeking a couple to make the flight, "this is very symbolic, and we really need it to represent humanity with a man and a woman," Taber MacCallum, chief technical officer and potential crew member said.
He said if it is a man and a woman on such a long, cramped voyage, it makes sense for them to be married so that they can give each other the emotional support that will probably need when they look out the window and see Earth get smaller and more distant, adding: "If that's not scary, I don't know what is."
Anu Ojha, a director of the National Space Academy in Leicester, said that unlike the unmanned probes landed on the surface of Mars, the mission would not be able to bring back useful data on the planet.
However, as an exemplar of human endurance and exploration this mission is totally unprecedented, Ojha said.
The mission has been scheduled for 5 January, 2018, in order to take advantage of an alignment in the planets that occurs once every 15 years. (ANI)