Sex in Space? Astronauts embarking on long voyages should have access to mechanical robots to help physical and mental health, say researchers

In space, no one can hear you scream, but researchers say astronauts embarking on long voyages will have needs – and sex robots may be the answer.

Scientists say sex will be important for astronauts on long missions because of its beneficial effects on both their physical and mental health – and with journeys in space likely to become much longer, the need for a solution is increasing.

Maurizio Balistreri, of the University of Tuscia, Italy, said: 'Considering the fact that astronauts might be in remote regions with limited opportunities for emotional or sexual relationships, we think that it is appropriate for space agencies and private sector companies to support the development of sex robots and promote their use among astronauts.'

Writing in the journal New Techno Humanities, Balistreri explains that as well as a lack of potential partners and the cramped confines of a spaceship, zero gravity causes blood to flow upwards, rather than downwards as is the case on earth.

The result? Less blood around the genitalia where it is needed for sexual activity.

Blood circulation in space is affected and could make it difficult for a man to get an erection, according to Lori Meggs, from AI Signal Research.

In an article for NASA, she said: 'There's no gravity to pull blood into the lower part of the body. Instead, blood goes to the chest and head, causing astronauts to have puffy faces and bulging blood vessels in their necks.'

The New Techno Humanities report suggests that astronauts are given suitably equipped sex robots which can be touched, stroked and hugged.

As well as tending to sexual needs, the robot could serve as a 'companion', boosting an astronaut's mental health when they are far from home.

It said: 'Sex robots could allow astronauts to have a companion who is always present and able to help them with the most important practical matters.

'Having a robot next to us, an entity with which we can, for instance, converse and share a meal, would be a great advantage, and may perhaps help to make an otherwise dramatic condition more bearable.

'The robot can also be used for operational tasks, making it a reasonable and justifiable investment.'