Wanted: One couple, extremely confident in their love for each other, to go to Mars

Dennis Tito wants to give you the trip of a lifetime.

How much do you love your partner? Enough to move in with them? To a house with just under 17 cubic meters of space? And then not leave that house for just over 500 days straight? While drinking your own recycled urine?

If you do, you're odd. But, you may be able to find gainful employment on a spacecraft to Mars. The New Scientist reports:

This week the Inspiration Mars Foundation, a newly formed non-profit organisation, announced plans for a mission to Mars launching on 5 January 2018 and arriving at the planet in August of that year. Dennis Tito, who in 2001 became the first space tourist to visit the International Space Station, heads the foundation. The trip will be funded primarily by philanthropic donations – but Tito has committed to personally covering the first two years of mission development, no matter how much it costs.

"This is not a commercial mission," Tito said at a press conference on 27 February in Washington DC. "Let me guarantee you, I will come out to be a lot poorer as a result of this mission. But my grandchildren will come out to be a lot wealthier through the inspiration that this will give them."

Orbital trajectories shared on Twitter by team member Michael Loucks show plans for a spacecraft to leave Earth, fly past Mars and then come home – all within 501 days. The craft will pass over Mars at a distance of about 160 kilometres carrying a two-person crew, probably a married man and woman who will be paid to make the trip.

I'm hoping the specificity of "married man and woman" is an overreach on the part of the New Scientist, because that would be excluding all the wannabe astronauts who are unmarried or in same sex relationships. Hell, you could probably make the case that there should be a requirement that the explorers be a couple of the same sex. Because 501 days is considerably longer than nine months, and the one thing you don't want any chance of is space babies.

(Kidding, space babies would be awesome, but re-entry would be pretty tricky. An infertile couple could also work, of course.)

The full New Scientist piece makes clear that the trip is no easy task. Even ignoring the psychological troubles of being cooped up with someone you love(d) for almost 18 months, there's radiation, piloting, and then a ten-day orbital deceleration to deal with. And if you pull all of that off, you still don't get to actually go to Mars—just circle it from space. It's like that time a friend of mine was refused entry into the USA because they didn't have the right visa, only, I'd imagine, considerably more annoying.

The lucky couple's above for 501 days. Photograph: Inspiration Mars

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Why have men become so lonely – and how does it affect their health?

New findings show the consequences of having a lonely heart.

Go out and get some friends. No, seriously. Hop on the Tube and act faux-interested in the crap-looking book your fellow commuter is reading, even if it's on their Kindle. Chances are it's better than the one in your bag, and they're probably a decent human being and just as lonely, like you and me.

A new slate of facts and figures are showing just how widespread loneliness, is while simultaneously being amazingly terrible for your health.

Research led by Steven Cole from the medicine department at University of California, Los Angeles is showing the cellular mechanisms behind the long known pitfalls of loneliness. Perceived social isolation (PSI) – the scientific term for loneliness –increases the exposure to chronic diseases and even mortality for individuals across the world.

The authors examined the effects of loneliness on leukocytes, also known as white blood cells, which are produced from stem cells in the bone marrow and are critical to the immune system and defending the body against bacteria and viruses. The results showed loneliness increases signalling in the sympathetic nervous system, which is responsible for controlling our fight-or-flight responses, and also affects the production of white blood cells.

Recently, the Movember Foundation, which focuses on men's health and wellbeing, carried out a survey with the help of YouGov investigating friendship and loneliness amongst men. The results are alarming, with only 11 per cent of single men across the spectrum in their early 20s to late-middle age saying they had a friend to turn to in a time of crisis, the number rising to 15 per cent for married men.

Friendship has shown not only to be important to a person's overall wellbeing, but can even add to a person's earnings. A previous study involving 10,000 US citizens over 35 years showed people earned 2 per cent more for each friend they had.

The Movember Foundation survey comes soon after the Office for National Statistics (ONS) showed that men in Britain make up 58 per cent of the 2.47m people living alone between the ages of 45 and 64. The reasons behind this figure include marrying later in life and failed marriages, which usually result in children living with the mother. Women still make up the majority of the 7.7m single-occupant households across all ages in the country, at approximately 54 per cent.

Chronic loneliness seems to have slowly become a persistent problem for the country despite our hyper-connected world. It's an issue that has made even Jeremy Hunt say sensible things, such as "the busy, atomised lives we increasingly lead mean that too often we have become so distant from blood relatives" about this hidden crisis. He's previously called for British families to adopt the approach of many Asian families of having grandparents live under the same roof as children and grandchildren, and view care homes as a last, not first, option.

The number of single-person households has continued to increase over the years. While studies such as this add to the list of reasons why being alone is terrible for you, researchers are stumped as to how we can tackle this major social issue. Here's my suggestion: turn off whatever screen you're reading this from and strike up a conversation with someone who looks approachable. They could end up becoming your new best friend.