Sex in space is a logistical nightmare with problems ranging from floating fluids to shrinking manhoods, a NASA-funded scientist says.
John Millis, a physicist and astronomer, spoke to The Sun Online about the issues faced by consenting astronauts who wish to engage in rumpy-pumpy in micro-gravity.
Millis, of Anderson University in Indiana, compared sex in space to having intercourse while “skydiving” but added that it was “not impossible.”
“The issues surrounding the act all revolve around the freefall, micro-gravity, environment experienced by astronauts,” he said. “Imagine engaging in sexual activity while skydiving — every push or thrust will propel you in opposite directions.
“Even the lightest touch can make it difficult to stay in contact if both persons are not properly anchored. The astronauts would need to brace themselves against the space station and even each other.
“A shared sleeping bag, or similar, would perhaps be the most useful.”
But more problems would arise if the romantic astronauts were able to lock together in a coital tryst.
Millis, whose work has been funded by NASA, explains that in micro-gravity blood rises to your head, instead of your genitals – making it harder for both men and women to get aroused.
This low blood pressure below the waist also causes the tissue in a man’s penis to shrivel — potentially impacting an astronaut’s confidence when it comes to liftoff.
Another issue is that male testosterone levels plummet in space, meaning that rocket-riding adventurers suffer from a lack of sex drive, says Millis.
He adds: “In fact, the heart will shrink over time the longer astronauts are in orbit. It also means that there is less blood in our lower extremities, the region that the body pulls from when generating an erection.”
Sex in an environment lacking gravity would result in all fluids such as sweat, vaginal wetness and semen pooling and floating around the cabin — making the high-jinks more than slightly uncomfortable.
He said: “It would likely be very hot, especially as two bodies press against each other, as well as sweaty.
“Because of the micro-gravity environment sweat and tears don’t run down the astronaut’s bodies like it does here on Earth, instead it pools like small ponds of fluid near where it was secreted.
“If the motion is vigorous enough it could be ejected from the surface of the body. And that seems decidedly un-romantic while also possibly bringing challenges to physical movements.”
However, the academic believes that despite the difficulties a couple “could certainly become aroused and reach climax in space.”
In his book, “Life in Space,” NASA technician Harry Stine claimed that sex had been simulated by the space agency – and that a lucky “third person” was the best way to facilitate the friskiness.
He said: “It was possible but difficult and was made easier when a third person assisted by holding one of the others in place.”
Sci-fi author and inventor Vanna Bonta created an outfit known as the 2suit to help astronauts get their rocks off in space.
Bonta came up with the idea while she and her husband were taking part in a zero-gravity flight and were unable to hug each other because of the weightlessness.
The 2suit has large flaps which open at the groin and is covered in Velcro which enables users to attach to each other and engage in sexual intercourse.
It is intentionally baggy – with wearers able to adjust its roominess – to facilitate movement.
Bonta and her husband tested out the 2suit on a zero-gravity aircraft – but only kissed and hugged in front of expectant photographers.