Exploration – Listorati https://listorati.com Fascinating facts and lists, bizarre, wonderful, and fun Sat, 03 Aug 2024 15:38:18 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 https://listorati.com/wp-content/uploads/2023/02/listorati-512x512-1.png Exploration – Listorati https://listorati.com 32 32 215494684 Top 10 Long-Term Space Exploration Problems We Have Yet To Solve https://listorati.com/top-10-long-term-space-exploration-problems-we-have-yet-to-solve/ https://listorati.com/top-10-long-term-space-exploration-problems-we-have-yet-to-solve/#respond Sat, 03 Aug 2024 15:38:18 +0000 https://listorati.com/top-10-long-term-space-exploration-problems-we-have-yet-to-solve/

Everyone is excited about the possibility of a manned mission to Mars. There is even speculation that the first humans will land on Mars in the 2030s. Well! That could be true. But it is actually harder than it looks. A manned mission to Mars could remain a pipe dream considering current technology and political trends, especially in the United States.

There are also several problems over which we have no control. This often involves our bodies and the conditions on Mars itself. It seems like Mars is out to kill the first humans who set foot on it—an opinion shared by several people including Elon Musk, who may revolutionize space travel. Nevertheless, we will keep our fingers crossed.

10 Money

NASA cannot afford a manned mission to Mars. This was revealed in July 2017 when William Gerstenmaier, NASA’s chief of human spaceflight, revealed that the agency does not receive enough funding from the US government to make NASA’s first Mars landing scheduled for the 2030s realistic.

NASA, private space agencies, and nonprofits give vastly different figures when estimating the cost of a manned mission to Mars. This ranges from $1 trillion spread over 25 years (as proposed by the nonprofit Mars Institute) to $100 billion spread over 30–40 years (as proposed by NASA). However, NASA cannot afford their estimate.

NASA received $19.5 billion in funding for the 2017 fiscal year. That amount seems like a lot until we realize that the agency splits this money between several space missions, programs, and research. Considering current trends, NASA’s funding drought is unlikely to end anytime soon. Its budget has only grown by a measly 2 percent a year within the past few years.[1]

9 Loneliness

Humans are social creatures and often require interaction. Researchers fear this could become a problem during an expedition to Mars. A few years ago, researchers had a group of people live in an isolated habitat in the Arizona desert for a considerable period of time.

They noted that some participants soon suffered from depression and mood swings. Some also became hostile and mostly did not talk to each other for 18 months. Their few interactions were limited to brief conversations about running the facility. Although the team later had psychologists to help them, astronauts on Mars will not have the same privilege.

The results of this test have made some researchers question future plans to send just two astronauts to Mars in a single spacecraft. The astronauts will probably become bored, depressed, and could even start to dislike each other, which could lead to their doom. However, some researchers think this is unlikely to happen if the two astronauts have compatible personalities.[2]

8 The Dust Storm

In January 2004, the NASA space rover Opportunity landed on Mars for a 90-day mission (in Mars days) to find evidence of water on the Red Planet. Opportunity completed its assignment almost immediately and went on to complete more missions over 15 years. Its surprising survival streak ended in June 2018 when it lost contact with NASA during a dust storm.

Opportunity often hibernated at night because it ran on solar power. However, it probably switched to its backup battery after the dust from the storm covered its solar panels. Opportunity ran on its batteries until it died. NASA fears a repeat incident could happen with the solar-powered stations used by astronauts on Mars.

Mars experiences two types of dust storms. The first and commonest are the regular storms that could cover large swathes of land as wide as a whole continent on Earth. Thankfully, these storms are light and only last for a few weeks. The other type—like the one that killed Opportunity—is the rarer but stronger “global dust storm” that covers the entire planet.

Global dust storms occur every 5.5 Earth years (three Mars years) and could last for months. Besides covering the solar panels, they could also block sunlight from reaching Mars, which could put the stations and astronauts in jeopardy. Thankfully, Mars dust storms are unlikely to cause serious physical damage to the stations. They are more of a breeze than a storm despite the name.[3]

7 Food

A study by PhD students at the Massachusetts Institute of Technology (MIT) revealed that a human colony on Mars could die of starvation. The group based their study on the manned mission planned by Mars One.

The organization wants to set up a human colony of 25–40 individuals on Mars by 2025. Food will be provided by crops grown inside the habitat of the colonists. An MIT study to simulate that habitat has revealed that the astronauts will need to choose between getting enough food or oxygen.

The food and oxygen levels in the habitat are linked because plants produce oxygen as a by-product. On Mars, that oxygen will be used to sustain the lives of the astronauts. The MIT study revealed that the plants will produce excessive oxygen if they produce enough food to feed everyone in the habitat.

This will clearly be detrimental to the lives of the astronauts because breathing excessive amounts of oxygen could kill them. However, the oxygen levels would be balanced if the plants produce lesser amounts of food, which would not be enough to feed everyone. The researchers say that this problem could be solved by developing an “oxygen removal system,” which does not exist for now.[4]

6 Spacecraft

The race to land the first human on Mars is currently led by NASA, SpaceX, and Blue Origin. In fact, all three organizations already have spacecraft that could take us to Mars. However, their rockets use dangerous fuels and would take too long to get to Mars from a human safety perspective.

NASA is trying to solve this by developing the Space Launch System that uses liquid hydrogen and some other chemicals for fuel. SpaceX is considering altering its spacecraft to use liquid methane for fuel, while Blue Origin is settling for liquid hydrogen. However, some still doubt whether these new spaceships and fuels will get us to Mars.[5]

One is Chris Hadfield, a former NASA astronaut, who likened traveling to Mars—in even the latest spaceships in development—to crossing an ocean in a canoe. Hadfield believes that the dangers of space and the unpredictability of the spaceships will kill most astronauts long before they land on Mars.

Curiously, this opinion is shared by SpaceX CEO, Elon Musk, who once mentioned that the first manned Mars mission will probably lead to death.

5 Surgery

As the possibility of long-term manned space missions to the Moon and even Mars becomes a reality, scientists have started to grapple with the problems posed by performing surgery in space. The unique environment of space means sick astronauts are likelier to die of minor wounds and infections there than on Earth.

Astronauts sent to the International Space Station (ISS) are often trained to perform certain medical procedures like administering injections, stitching wounds, and even extracting a tooth. However, they would need to quickly return to Earth on a spacecraft permanently docked at the ISS if they have more severe medical issues.

This is because the sick bay on the ISS is no better than a first aid kit. Even if the sick bay rose to the same standard as a hospital and had a permanent doctor (which it does not), the lack of gravity would be a real challenge.

Among other problems, blood from the wound or surgical incision could float and obstruct the view of the doctor. Worse, it could contaminate the entire cabin. Also, anesthesia does not work as well as on Earth, which means lots of pain for the astronaut.

These problems could be worse on long-term space explorations to the Moon and Mars. One suggestion is to use robot surgeons controlled in real time by human doctors on Earth. While this could work on the Moon, it would be impossible on Mars where information takes 20 minutes to reach Earth and vice versa.[6]

4 Mars Toxic Dust

Mars is filled with toxic dust that could hamper a manned mission to the Red Planet. Mars dust exists as round, fine, electrically charged silicate particles that will stick to astronauts’ suits. The dust will be difficult to remove, raising concerns that it could get into the astronauts’ base and clog crucial instruments and systems including water purifiers and air filters.

This could be deadly because the fine silicate particles could seep into the lungs where it will react with water to form harmful chemicals. The effect of the dust becomes worse when we realize that it contains gypsum and perchlorates. Gypsum is not dangerous on its own, but long-term exposure could cause eye, skin, and lung problems. Perchlorates could cause thyroid gland problems.[7]

3 Exposure To Space Elements

Space is filled with dangerous cosmic rays and irregular solar storms that could cause intense radiation. Scientists predict that astronauts traveling to Mars will be exposed to radiation levels up to 20 percent more than they will ever receive during their lifetimes on Earth. This intense radiation could cause heart, lung, and eye problems as well as neurological disorders and even cancer.

This could be a huge problem because a one-way trip to Mars could last six months. Solar storms are also unpredictable, which makes the situation worse. One solution is to develop a spacecraft that could get astronauts to Mars much faster. However, astronauts are not free from these radiation risks even when they get to Mars.[8]

Although Earth’s atmosphere shields us from dangerous radiation, Mars’s atmosphere does not provide the same protection. Scientists propose to solve this by covering the human habitat on Mars with a thick anti–solar storm material just like the shielding on parts of the ISS. Others propose that humans will be protected from the radiation if they live in the any of Mars’s numerous lava tube caves instead.

2 Our Bodies Cannot Cope

Human bodies have a hard time adjusting to the zero gravity levels experienced in the nearby ISS. This would become even worse during and after a trip to faraway Mars. Astronauts would have to cope with three different gravitational fields during a voyage to Mars.

Astronauts will experience the first gravitational field here on Earth (before and after the trip). It is the regular one we are used to. The second is the zero gravity that astronauts experience while traveling the distance between Earth and Mars. The third is the gravitational field on Mars, which is one-third the gravity on Earth.

Moving between gravitational fields causes a distortion in our senses of balance and movement. It also affects the coordination between our eyes, head, and hands. The lower gravity levels outside Earth will cause astronauts to lose valuable bone density. This makes their bones susceptible to breakage when they return to Earth.

The lower gravity level outside Earth will also cause body fluids to escape into the head. This could cause a myriad of problems including kidney stones, dehydration, loss of calcium, and eye problems. Drugs would have reduced the effects except that they work differently in space.[9]

1 The Return Trip

Using current technology, an expedition to Mars will be a one-way trip because astronauts who travel to Mars will be unable to return to Earth. While NASA is already developing the Mars Ascent Vehicle (MAV) to make a return trip possible, the technology is not without its own problems.

When completed, the MAV will weigh 18 tons and will carry an extra 33 tons of fuel to take off from Mars. This massive weight means that it will be unable to land safely on Mars due to the planet’s thin atmosphere, which could make the MAV burn up in the atmosphere or slam straight into the ground. For comparison, the heaviest thing we have landed on Mars is the Curiosity rover, which weighs just one ton.

NASA intends to solve this by reducing the weight of the MAV and developing an inflatable heat shield that will slow the craft’s speed during its descent to Mars. The MAV will have a minimalist interior and might not even have seats. However, the astronauts will not be standing all the way back to Earth. Instead, they will be transported to the Earth Return Vehicle (ERV), which will orbit Mars and return them to Earth.[10]

The ERV was also created to reduce weight. Instead of making a single spacecraft that will take off from Mars and bring the astronauts back to Earth, NASA will create a two-part system consisting of the MAV and the ERV. The MAV will take off from Mars’s surface and transport the astronauts to the ERV, which will bring them back to Earth.

Scientists will also reduce the weight of the MAV by having it create its fuel from Mars’s atmosphere. The MAV will extract methane (carbon and hydrogen) and oxygen, which it needs to make its fuel, from the underground water and the abundant carbon dioxide (CO2) in Mars’s atmosphere.

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10 Joys And Terrors Of Space Exploration https://listorati.com/10-joys-and-terrors-of-space-exploration/ https://listorati.com/10-joys-and-terrors-of-space-exploration/#respond Thu, 06 Jun 2024 09:26:59 +0000 https://listorati.com/10-joys-and-terrors-of-space-exploration/

The dangers of space travel are well understood. Lists of its casualties include the entire Apollo 1 crew (Gus Grissom, Edward White II, Roger Chaffee) and the entire team of cosmonauts on the Soyuz 11 (Georgi Dobrovolski, Viktor Patsayev, Vladislav Volkov). The business of space travel is a risky one. Since the 1960s, more than 20 astronauts and cosmonauts have died in the pursuit of space exploration.

But that’s only one piece of the puzzle. Sally Ride, the first American woman in space, summed up the other half when she said, “The thing I’ll remember most about the flight is that it was fun. In fact, I’m sure it was the most fun that I’ll ever have in my life.”

Space exploration is equal parts danger and excitement, sprinkled with humor. The following are five cases of the harrowing nature of space flight and five cases of its goofiness.

10 Terror: Blinded During A Spacewalk

The very notion of a spacewalk, or EVA (extravehicular activity), is a terrifying one in which the astronaut leaves the confines and safety of his ship or station with only a tether to keep him from drifting into infinite nothingness. Particularly terrifying would be losing one of your most important senses during the venture. This is exactly what happened to Commander Chris Hadfield during a spacewalk in 2001.[1]

During such a spacewalk, keeping an uninterrupted view is important for efficiency. So, an oil-and-soap solution is used to coat the inside of the spacesuit visor to prevent fogging. In an incredible irony, that solution was responsible for totally removing Hadfield’s ability to see.

Sweat or tears managed to come into contact with the solution and floated directly into Hadfield’s eye, which caused instant blindness as his eye began to tear up. Hadfield said, “I thought, well, I—maybe that’s why we have two eyes. So I kept working.”

With his one eye temporarily blinded, tearing up would normally be perfectly fine. After all, tears are our eyes’ means to clean themselves. But in the microgravity of orbit, the tears wouldn’t fall down Hadfield’s face.

Instead, they pooled up in a ball around his eye, a blob that eventually became so large that it spread to his other eye. He was completely blind, floating along with the world in outer space and alone outside of his spaceship.

Hadfield relied on his training and trusted his crew. Given enough time, his body produced sufficient tears to dilute the antifog solution and he was able to see through the puddle. After some negotiation with Houston, he was even able to continue working and finish his task.

Explaining the key to keeping calm even in situations as nerve-racking as that one, Hadfield said:

[It’s] looking at the difference between perceived danger and actual danger. Where is the real risk? Where is the real thing that you should be afraid of? Not just a generic fear of bad things happening. You can fundamentally change your reaction to things. It allows you to go places and see things and do things that would otherwise be completely denied to you.

9 Joy: A Music Video In Space

Not all of Commander Hadfield’s experiences in space were harrowing ordeals. He also found the time to work on a “family project” with his son. Namely, they recorded footage of the commander singing and playing “Space Oddity” by David Bowie with the International Space Station’s own guitar and edited it into a music video, the first ever made in space.

The guitar was transported to the ISS by Space Shuttle Discovery in 2001. Later instrument additions to the ISS included a flute, a keyboard, a saxophone, and an Australian didgeridoo.

Hadfield discussed David Bowie’s reaction to the video and said:

He described it as the most poignant version of the song ever done, which just floored me. I think, for him, he knew he was ill—it was getting to the end of his life. He wrote that song at the beginning, when he was still 19 or 20, before we had even walked on the Moon.

He had always fantasized about flying in space—Starman and Mars and all that other stuff, and I think for him it was just like a gift, to have that song updated with the lyrics, performed actually in space, just a couple of years before he was taken. To me, that might be the best part—that he got delight out of my particular version of the song.[2]

8 Terror: Nearly Drowning In Space

Approximately 385 kilometers (240 mi) away from any ocean, lake, pond, creek, or pool, one would think that a fear of drowning could be safely ignored while serving aboard the International Space Station. Astronaut Luca Parmitano faced this danger during a spacewalk in July 2013 when he began to feel liquid pooling at the back of his head in his spacesuit.

He was sweating, he concluded, but not enough to account for what he was feeling. He tasted a droplet of the water. It was metallic and very cold, not at all like the drinking water available inside his suit.

After Parmitano consulted with his crew and mission control, the spacewalk was canceled. It wasn’t a hasty dash back to the station. Instead, they were given instructions to make an orderly withdrawal.

However, the two astronauts on the spacewalk had to take different routes to return to the airlock or their tethers would risk getting tangled. Luca Parmitano made his way back alone, with a helmet slowly filling with a mystery liquid.

During his walk back to the airlock, he needed to flip his body to avoid an obstacle. Due to that motion, the growing blob of zero-gravity water moved into his eyes and nostrils. He was blinded and fighting to breathe. At this point, his headset stopped working. He said, “I’ve been told that I was cool as a cucumber. The truth is that I was trying to talk.”

It took Parmitano 24 minutes to get inside and 11 minutes more to get his suit off. Inside the airlock as he waited for air to pressurize the chamber, he said:

[I] was just waiting for the [repressurization] to end, taking it one second at a time. At that point, I’m virtually isolated from a sensory point of view. I can’t hear. I can’t really see. I can’t move. Every time I moved, the water sloshed around.

Astronaut Chris Cassidy was Parmitano’s partner during the spacewalk. Describing when they were in the airlock together, Cassidy said:

[The water was] sort of bouncing around his nostrils. That’s when my senses really got heightened. So I grabbed his hand, just kind of squeezing it. He and I had never talked before that this would be our hand signal if we can’t talk. It just was a natural thing. I grabbed his hand and squeezed it. He squeezed it back, so I knew he was okay.[3]

Cassidy then reported, “He looks fine. He looks miserable but okay.”

After Parmitano’s helmet was removed and the liquid mopped off, it amounted to an estimated 1.4 liters (1.5 qt). The source of the water was from a failed fan pump separator. Since the incident, a snorkel-like addition has been fitted to spacesuits, giving astronauts a way to breathe if their suits fill with water.

7 Joy: Smuggling Sandwiches Into Space

During the early NASA space missions, food was bland and tasteless, which left some astronauts craving something more. One astronaut in particular, John Young, took matters into his own hands and brought a corned beef sandwich with him on the Gemini 3 mission.

It was the first American two-man spaceflight, and he naturally offered a bite to his fellow astronaut Gus Grissom. The Gemini 3 transcript recorded the entire conversation:

“What is it?” Grissom asked.

“Corned beef sandwich,” Young replied.

“Where did that come from?”

“I brought it with me. Let’s see how it tastes. Smells, doesn’t it?”

Grissom took Young up on his offer to try some and then quickly put the sandwich away because the rye bread was falling apart as he ate it. Crumbs started to fill the cabin. Young admitted that the sandwich was “a thought . . . not a very good one.” Grissom stayed positive about it. “Pretty good, though,” he said, “if it would just hold together.”

All told, the conversation lasted less than a minute, but that sandwich caused Young to receive some heat from the US House of Representatives’ Committee on Appropriations. They called it the $30 million sandwich. George Mueller, NASA’s associate administrator for manned space flight, made the agency’s position on unofficial sandwiches clear when he said, “We have taken steps . . . to prevent recurrence of corned beef sandwiches in future flights.”

Despite those words, corned beef sandwiches were included officially in food offered to astronauts in April 1981. Perhaps it wasn’t coincidental that they first appeared on the menu on a shuttle mission commanded by Young.[4]

6 Terror: Ballistic Landings

You may have heard the term “controlled descent.” It is a flat flight profile descent to Earth which doesn’t put much strain on a vehicle (or pilots). It’s like a paper airplane glide, slowly losing altitude until it lands on the ground. A controlled descent is the ideal way to land a spaceship like a Russian Soyuz capsule, which is used to ferry cosmonauts and astronauts back from the ISS.

The opposite of a controlled descent is a ballistic reentry. This is a harsh, steep drop back to Earth. It puts much more strain on the craft and its occupants.

In the event of a ballistic reentry, the Soyuz capsule is designed to try to shed as much speed as possible or it will slam to Earth and kill the people aboard. If a controlled descent is a paper airplane, a ballistic reentry is like a falling rock.

When Yi So-yeon, the first Korean in space, returned from her first visit to the ISS with US and Russian colleagues Peggy Whitson and Yuri Malenchenko, respectively, they did not land with a controlled descent. The reasons were unknown, but the capsule took a much steeper approach to Earth and ended up nearly 480 kilometers (300 mi) off course in Kazakhstan.

When the three space travelers emerged, they were greeted by a wide-eyed group of nomads. Yi said afterward, “The nomads were surprised when Yuri climbed out of the capsule. They very well would have been since a ball of fire fell from the sky and then a white object crawled out of it.”

All three crew members were largely unharmed, but the danger was real. When describing the high g-force descent and landing, Yi said, “I thought that this is how I might die.”[5]

5 Joy: Peeing On The Whole World

During John Glenn’s five-hour mission to space (previous US missions had only lasted 15 minutes or so), he was trained to report everything he saw. Constellations, the endless blackness, and his own condition during zero gravity were all things upon which he remarked—as expected. But he also reported on the unexpected.

During his historic Mercury spacecraft flight, he radioed to Earth:

This is Friendship Seven. I’ll try to describe what I’m in here. I am in a big mass of some very small particles that are brilliantly lit up like they’re luminescent. I never saw anything like it. They round a little. They’re coming by the capsule, and they look like little stars. A whole shower of them coming by.

They swirl around the capsule and go in front of the window, and they’re all brilliantly lighted. They probably average maybe [2.1 or 2.4 meters (7 or 8 ft) apart], but I can see them all down below me, also.

Glenn referred to these particles as “fireflies.” Future missions were given the specific task of photographing and identifying these “fireflies.”

On the next Mercury spacecraft, astronaut Scott Carpenter deduced the cause as pieces of frost escaping from the spaceship and glistening in the sunlight. A beautiful but simple mystery was solved. Still, the topic of fireflies came up once again during one of the last Mercury missions.

Astronaut Walter “Wally” Schirra reported on the fireflies: “As I said before, their source was water released in the heat exchange process that cooled our spacesuits. Another source was urine. ‘We peed all over the world,’ I’m fond of saying.”

He and his fellow astronaut took several pictures of their own pee fireflies. Schirra said, “We logged each shot with a label—urine drops at sunrise, urine drops at sunset, etc. When the photos were processed at the cape, they were beautiful and I ordered a set of prints.”

Back on Earth, the urine drop pictures were mixed in with other celestial photos. During a debriefing after the mission, Dr. Jocelyn Gill asked about the photos, “Wally, what constellation is this?”

“Jocelyn,” Schirra answered, “That’s the constellation Urion.”[6]

4 Terror: Exposure To Toxic Gas

What had seemed impossible when the space race between the US and the Soviet Union began in the 1950s became a reality in 1975: The two world powers worked together and not against each other for a joint space mission.

The Apollo-Soyuz Test Project was to show that two differently designed ships could dock together in space using a jointly designed docking module. The mission was a success and offered an optimistic encounter for humanity’s future.

After the meeting of spacecraft, which included exchanging gifts in space, the two crews from two different countries went their separate ways. It was on that return journey to Earth that the US crew faced a terrifying situation.

At an altitude of roughly 7,000 meters (23,000 ft) during their descent, their cabin began filling with a brownish-yellow gas that could have been the deadly nitrogen tetroxide used for maneuvering rockets.

Astronaut Deke Slayton played it down by saying, “We picked up a little smoke on the way, and we were coughing and hacking pretty good in there.” But their exposure lasted 9–11 minutes and was enough for astronaut Vance Brand to fall unconscious.

As soon as the capsule landed, the crew rushed to retrieve oxygen masks. Brand was initially unconscious, but a readjustment of his mask was enough to wake him. The crew was rescued and given medical care.

There were no long-lasting effects, but they did suffer temporary breathing irritation. Although the mission ended with a panic, it was ultimately a successful joint mission between two longtime adversaries. Another such joint mission didn’t happen for another 20 years until the Shuttle-Mir program.[7]

3 Joy: Space Darts And Hide-And-Seek

It costs about $4,500 per kilogram ($10,000/lb) to put an item into Earth’s orbit. So luxury goods and entertainment options are limited aboard the International Space Station. Instead, astronauts sometimes need to make their own fun.

Hide-and-seek is a good game that requires nothing new sent from home. You might think that there can’t be many places to hide on a space station. But the ISS is slightly bigger than a football field and only 18.6 meters (61 ft) narrower than Star Trek’s USS Enterprise.[8]

Another “homemade” entertainment option is space darts. While normal high-speed pointy metal darts would be a very bad idea in space, a variant was designed by astronaut Chris Hadfield. Using a battery to provide weight, Velcro, zip ties, and a piece of paper acting as a feather (like an arrow), he constructed a slow-moving dart that could adhere to a target. Thus, the great game of zero-gravity darts was born.

2 Terror: Stranded In Siberia

After his history-making spacewalk, the first ever performed, Alexei Leonov almost died. His spacesuit had bloated because of the unexpected conditions in the vacuum of space, and he could barely return to his craft. His only option was to bleed oxygen from his suit into space until he could once again fit into the airlock. He survived.

When he and his crewmate, Pavel (Pasha) Belyayev, later made their descent to Earth, their automatic guidance system malfunctioned. They had to guide the craft and select their destination manually.

During their descent, they once again faced possible death as their landing module remained connected to the orbital module by means of a communication cable. This twisted and spun them as they fell, forcing them into terrible g-forces that popped the blood vessels in Leonov’s eyes.

This malfunction caused them to veer massively off course. Leonov had aimed for the city of Perm and ended up 2,000 kilometers (1,245 mi) beyond it, deep in the Siberian wilderness.

Leonov wrote about the experience:

We were only too aware that the taiga where we had landed was the habitat of bears and wolves. It was spring, the mating season, when both animals are at their most aggressive. We had only one pistol aboard our spacecraft, but we had plenty of ammunition. As the sky darkened, the trees started cracking with the drop in temperature—a sound I was so familiar with from my childhood—and the wind began to howl.[9]

The temperatures reached -30 degrees Celsius (-22 °F) that first night. Leonov continued his account:

But the light was failing fast, and we realized we would not be rescued that night. We would have to fend for ourselves as best we could. As it grew darker, the temperature dropped rapidly. The sweat that had filled my spacesuit while I was trying to reenter the capsule after my spacewalk was sloshing around in my boots up to my knees. It was starting to chill me. I knew we would both risk frostbite if we did not get rid of the moisture in our suits.

The two men stripped naked to rid themselves of the moisture buildup and dismantled their spacesuits. The inner layers were soft and flexible, but the outer ones were stiff and hard and had to be discarded. They could fashion no other shelter in time and had to take refuge in the crashed capsule, which had a gaping hole where the hatch had been.

Ultimately, the two men spent two nights in the bitterly cold wilderness before being rescued. Though they faced no predators, wolves and bears were a serious enough concern that the men lobbied that future cosmonauts be equipped with more powerful firearms in case they also had to survive a wilderness crash landing.

1 Joy: The Cupola Observational Module

The Cupola Observational Module is a small room on the ISS. The official use is described as “for the observation of operations outside the station such as robotic activities, the approach of vehicles, and spacewalks.”

But the more popular use is as a way to behold what Chris Hadfield described as “a self-propelled art gallery of fantastic changing beauty that is the world itself.” Countless astronauts and cosmonauts from many countries have floated, mesmerized in awe at the beauty of our world.

Italian astronaut Paolo Nespoli described his time in the cupola:

I had this feeling that I was a scientist peering down a microscope that allowed me to take pictures of this small sphere rotating below, discovering microscopic things. I’d look at the pictures and realize that those things were 20 kilometers (12.4 mi) in diameter.

Alan Shepard, the first American in space, described the feeling so often felt in the cupola, although he had a different window to look out of. He said:

Instead of an intellectual search, there was suddenly a very deep gut feeling that something was different. It occurred when looking at Earth and seeing this blue-and-white planet floating there, and knowing it was orbiting the Sun, seeing that Sun, seeing it set in the background of the very deep black and velvety cosmos, seeing—rather, knowing for sure—that there was a purposefulness of flow, of energy, of time, of space in the cosmos—that it was beyond man’s rational ability to understand, that suddenly there was a nonrational way of understanding that had been beyond my previous experience.

There seems to be more to the universe than random, chaotic, purposeless movement of a collection of molecular particles. On the return trip home, gazing through [386,000 kilometers (240,000 mi)] of space toward the stars and the planet from which I had come, I suddenly experienced the universe as intelligent, loving, harmonious.[10]

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