NASA has a bold plan to send astronauts to Mars by 2030 (opens in new tab) (or thereabouts). In preparation for this monumental Martian mission, the space agency needs to make sure everything's in order years beforehand.
From engineering the rockets and making sure there are enough supplies for a round trip, to developing 3D printing tools and ensuring a long-distance communications system is up to the challenge, there’s a lot to think about, develop and test.
But it’s easy to focus on the tech and logistics and overlook arguably the most important bit of the mission: the astronauts themselves.
NASA is working hard to ensure that astronauts are well fed, comfortable(ish) and physically fit in space so they’re at tip-top condition. But their mental health is just as important.
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Why mental health matters
Although everyone should be taking care of their physical and mental health, whether they’re working on the International Space Station (ISS) or working at a desk, looking after your mental well-being is different in space.
We asked Nicholas C. Salamon, Researcher at The Ohio State University (opens in new tab), who's interested in tech applications that positively impact mental health on long-term space missions, what needs to be considered.
“Happiness and mental well-being are important for most people, but mental health is especially important for astronauts on long missions simply due to the nature of their environment,” he told us.
“On Earth, having a couple bad days in a row probably won't endanger anyone. In space, however, an astronaut suffering a decrement in mental health could make a mistake that ends the mission or worse, the lives of the crew.”
Luckily, astronauts are extremely well-trained. Not only that, but they have a support network that includes communication with people on the ground, time to relax and time to socialize.
Testing on the ground
Traveling to Mars will come with its own set of challenges, all of which are impossible to recreate exactly on Earth. But that doesn’t mean that studying similar situations isn’t extremely useful in preparing for long-haul space travel.
Environments like Arctic research stations and submarines can provide a useful context that could help us assess the psychological issues that might arise on a mission to the red planet.
The most significant experiment taking place on Earth is NASA’s Human Exploration Research Analog, also known as HERA (opens in new tab). It’s a closed habitat at the Johnson Space Center, which looks at the effects that confinement, isolation and working in remote conditions have on humans. It’s used to look into medical and physical issues, as well as behavioral health and performance.
Ensuring astronauts are healthy and happy
NASA divides these physical and mental health factors into five categories (opens in new tab) that are related to the pressures astronauts are subject to as they travel through space. There’s gravity fields, hostile/closed environments, space radiation, distance from Earth and isolation/confinement.
There are plenty of physical health considerations, from making sure astronauts get enough exercise so their muscle mass doesn’t decrease too much through to ensuring they’re not exposed to too much radiation. While all of the above factors could impact the mental health of the crew, the main one that’s directly tied to wellbeing is isolation and confinement.
“The more confined and isolated humans are, the more likely they are to develop behavioral or cognitive conditions, and psychiatric disorders,” the NASA website explains. That’s why it’s been vital for NASA to study the behavior and mental health of people in confined spaces, like HERA, for a long time to address some of these issues.
Interestingly, NASA has identified that sleep plays a big part in overall mental health, which won’t be a huge surprise for anyone who suffers from restless nights and bad moods the next day. That’s because the pressures of space, the lack of regular light and the confined surroundings make a regular sleep/wake cycle difficult to maintain.
A number of solutions are already being tested (and used on space missions aboard the ISS) to address these issues, like actigraphy (opens in new tab). This helps astronauts assess and improve their sleep and alertness by recording how much they move, and the amount of ambient light around them each day.
There are also new and improved lighting solutions that use LED tech, and which will soon be used on the ISS to align astronaut's circadian rhythms in an attempt to improve performance and alertness, and aid better sleep.
Furthermore, therapeutic activities are being introduced, such as journaling. The idea is this will give astronauts a safe space to vent their frustrations, as well as provide researchers with a tool to study behavioral issues.
The possibilities of virtual reality
Virtual reality tech is already being used by both private space companies and space agencies to train astronauts on the ground and up in space. But the use of virtual reality as a medical tool has yet to be fully realized.
Salamon produced a research paper (opens in new tab) that explored the ways VR could positively impact the mental health of astronauts on long missions.
The first is that it can enable people to see virtual, natural environments. There have been countless studies (opens in new tab) about the efficacy of having people view nature scenes to decrease stress, which could be even more powerful up in space.
Not only can nature scenes ease stress, they could also provide a calming and confidential environment that feels private in the confined and intense conditions of a spacecraft.
Ohio State University's Salamon explained: “Stress management will be crucial on long space missions, and initial research shows that exposure to simulated natural environments can have a calming effect after stressors.”
VR has been used as a form of stress management and even pain management in a number of scenarios, from diagnosing and treating anxiety (opens in new tab) to dealing with PTSD (opens in new tab), so it makes sense that Salamon and his team would point to VR’s ability to provide the same benefits to astronauts.
A 2006 study (opens in new tab) found that pairing indoor exercise with a VR headset produced calming effects, which were even more calming than exercising outdoors among nature. Therefore, one way to deliver VR experiences might be to combine the technology with exercise.
“Astronauts already have to exercise for two hours every day to combat the muscle deterioration experienced in microgravity,” Salamon told us. “Instead of staring at the wall of their spacecraft, they could go on a jog through a forest, a park, their hometown, or anywhere really.”
The UK's National Health Service is investing in VR therapy (opens in new tab) as a way to treat a number of mental health problems; although, as with all aspects of VR, more research needs to be done in order to determine whether it’s as effective as it appears to be in initial trials.
It’s clear that, as tech advances, there could be huge opportunity for VR to help calm people and assist them in working through problems, whether their feet are planted firmly on Earth or they're on their way to Mars.
The great thing about VR is it’s versatile. This means that although it can be used to calm people and give them alone time in nature, the right experience could also help them to feel more connected to others. “Basically, the flexible nature of VR means it could potentially be used for relaxation, stimulation, socialization, exercise... the list goes on,” says Salamon.
“VR could also be used to combat boredom through immersive games or movies, and it could be used in a collaborative environment with other astronauts to create a social experience.”
It can also be used as a way for them to better communicate with friends and family on Earth. This could make astronauts feel less lonely, and they may miss their families less if they can interact with them regularly rather than just sending text-based messages or using video calling.
Thanks to platforms like Facebook Spaces (opens in new tab) and vTime (opens in new tab), developments in social VR as a means to connect people at great distances look promising, especially given advances in haptic touch technology. This could allow astronauts to even ‘touch’ their friends, partners and families from millions of miles away, which would foster an even greater sense of connection.
The future of mental health in space
It’s still early days in assessing just how useful VR technology could be to astronauts on long-haul missions, and Salamon’s research points to the need for more experimentation in this area. But given that VR is proving to be a valuable way of positively impacting on many areas of mental wellbeing, from calming stress to pain management, it seems likely it can be equally beneficial, if not more so, for space travelers.
“It is possible to make educated guesses about the efficacy of these methods, but it will be very important to perform in-depth studies that allow researchers to learn what works and what doesn't, and even what strategies might actually create an adverse effect on mental health in space,” Salamon told us.
After all, there’s a big difference between testing VR applications on Earth and on a spacecraft. “The social dynamic among a crewed Mars mission will be totally unique in many ways, which makes it hard to know which methods will be most effective,” Salamon adds.
But he believes these challenges shouldn’t put us off further exploring how VR could be used in space. “It shouldn't be written off as a gimmick. It has huge potential as a tool to keep astronauts, and others, mentally and emotionally grounded by providing virtual environments and scenarios that they would not have access to otherwise.”
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