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Shooting stars: What happens when astronauts poop in space?

Astronauts use the atmosphere to their advantage.

A shooting star above a winter landscape.

Astronauts must undergo extensive training before they can enter space. They have to learn spacecraft operations, survival skills, robotics, physical fitness, how to walk in space, and emergency protocols in case something goes wrong. They also need extensive training on how to use the toilet.

How do astronauts go to the bathroom in zero gravity?

Astronaut Chris Hadfield, a former commander of the International Space Station (ISS), says that astronauts must learn to recognize that the urge to go feels different in zero gravity. “How do you know when you have to poop on earth? It's actually because of the weight of the poop inside you. Tells you, hey, it's time to poop,” Hadfield says. “Well, if you're weightless, then your body's not gonna tell you it's time to poop. So you almost have to learn this new sort of fullness symptom that tells you it's time to poop.”


@_cosmic_enigma

How to poop in Space #astronauts #space #poop #iss #internationalspacestation #astronaut

Hadfield goes onto explain the rather ingenious of fans in space station toilets that mimic gravity for you. "Taking the place of gravity to pull the poop into the toilet is airflow," Hadfield explains. The fans work to suck the waste down once it leaves the body (this goes for urine as well, notes Hadfield). Though an impressive workaround, Hadfield certainly appreciates the effects of gravity after returning to Earth since it makes it a lot easier to go poop. “You're counting on gravity, cause gravity is gonna pull it away from you,” Hadfield said. “And without gravity, even when you're done pooping, the the poops just gonna stay sort of sticking to you. So we wear a rubber glove. And sometimes you have to, like, physically separate the poop from your body.”

Thank goodness for gravity.

johnson space center, space toilet, bathroom space shuttle, houston texas, space, engineering, Space Shuttle toilet on display at the Johnson Space Center in Houston.via Svobdat/Wikimedia Commons

Using air instead of water to suck waste into a space toilet makes things a lot less messy, too. You don’t want to flush your urine and feces in zero gravity. That would be a horror show. Being in space also does strange things to your poop. When astronaut Scott Kelly returned home after spending a year aboard the ISS, researchers found that his gut microbiome changed significantly from those typically found on the ground. It took a few months after Kelly’s return to Earth for his gut to return to normal.

iss, international space station, space, nasa photos, its, solar arraysThe International Space Station.via NASA/Wikimedia Commons

Where does the poop go when astronauts use the bathroom in space?

When Kelly was on the ISS, the urine was transformed into reusable water aboard the space station. The feces, for which he produced over 180 pounds during his 340-day stay in space, is collected into bags and put on a small craft that is launched into space. Much like a shooting star or meteorite, the waste eventually burns up as it reenters the atmosphere, so you don’t have to worry about astronaut poop landing on the roof of your house.

Astronauts must be cautious about when and where they use the restroom while in space, so a diaper can be a valuable asset during their mission. There’s nowhere to go on a spacewalk, so astronauts wear diapers to avoid aborting their mission if nature calls 250 miles above the Earth's surface. They also wear a diaper during takeoffs and landings because it’s too dangerous to get up and walk around the cabin.

You have to master an incredible number of skills to be able to make it into space as an astronaut. You need to know science and engineering, but also possess a good sense of self. You must learn new ways of interacting with your body, and one of the most important values you can cultivate while exploring the final frontier is humility.

Image via YouTube

Carl Sagan on 'Cosmos'

Over the past few years, there has been a growing number of people who believe the Earth is flat. A 2019 YouGov survey of more than 8,000 Americans found that as many as one in six are "not entirely certain the world is round."

Flat Earth Theory has, surprisingly, gained a lot of traction. A 2021 study published in the National Library of Medicine posited that the theory is buoyed by "the cognitive tendency to interpret, favor, and recall information in order to strengthen one's personal beliefs" or, in other words, confirmation bias. Though the "how" and "why" of Flat Earth Theory and its popularity is fascinating (and troubling, to be honest), the scientifically proven truth is that the Earth is round. It is a globe. It is spherical.

Of course, the knowledge that the Earth is round is not new. Ancient Greek philosophers across centuries studied and found evidence that the Earth is indeed round thousands of years ago. Way back in the 6th century BC, Pythagoras first proposed the Earth was round from observing the shape of the Moon. In the 5th century, Empedocles and Anaxagoras noticed evidence of the Earth's true shape by observing its curved shadow during lunar eclipses. In the 4th century, Aristotle argued the Earth was round after noting how ships disappear "hull-first" over the horizon line. In the 3rd century, Eratosthenes actually calculated the Earth's circumference using geometry and shadows with shocking accuracy.

earth, globe, sphere, flat earth, skeptics, scienceWe've got the whole (round) world in our hands. Image via Canva

Naysayers remain skeptical, and there's probably no changing their minds, but to this day, experts insist the Earth is round and back it up with cold, hard science. NASA posted this video just days ago. Watch:

- YouTubewww.youtube.com


Here's where Carl Sagan comes in.

Sagan hosted the original version of TV's Cosmos: A Personal Journey in 1980-81. According to PBS, Cosmos would become "one of the highest-rated programs in the history of public television" largely due to Sagan's ability for "reinterpreting intricate scientific jargon into elegant and memorable statements that the common person can easily conceptualize and appreciate." The show would be revived in 2014 with astrophysicist Neil deGrasse Tyson at the helm.

In the first episode of Cosmos, Sagan easily proved the Earth was a sphere using a piece of cardboard, some sticks, and the work of none other than the ancient Libyan-Greek scholar, Eratosthenes. Watch:

- YouTubewww.youtube.com

"How could it be, that at the same moment, a stick in Syene would cast no shadow and a stick in Alexandria, 800 km to the north, would cast a very definite shadow?" Sagan asked. "The only answer was that the surface of the Earth is curved," he concluded. "Not only that, but the greater the curvature, the bigger the difference in the length of the shadows."

Considering the distance between the two cities and the lengths of the shadows they produced, Eratosthenes was able to determine that the Earth had a seven-degree curve. He used that calculation to speculate the Earth was 25,000 miles in circumference.

These days, we know that the earth is 24,901 miles in circumference, which means Eratosthenes was less than 100 miles off. Didn't we say his accuracy was shocking? Not bad for over 2,000 years ago.


This article originally appeared five years ago.

Love Stories

Newlyweds land paid job living for free on gorgeous, uninhibited Irish island

They beat out 80,000 other applicants for the job of a lifetime.

Camille Rosenfeld; Alice Hayes

It's their dream of a lifetime.

What’s your dream job? President of the United States? A famous influencer with millions of followers and brand partnerships? A former NBA player who now cruises the airwaves with his besties, à la Charles Barkley? No? Well, what about this: Moving to a remote, uninhabited island in Ireland where there’s no running water, no hot showers, and no electricity? Sound enticing?

While that may not exactly sound like “heaven” to most folks, for newlywed couple Camille Rosenfeld (26) from Minnesota and James Hayes (37) from Tralee, Ireland, this version of the island life is exactly what they signed up for. From April 1 to September 30, the newlywed couple will become the caretakers of Great Blasket Island, a remote and uninhabited island off Ireland’s coast in the Atlantic Ocean.

stone homes near the ocean The beautiful, brutal Great Blasket IslandGreat Blasket Island

Once there, they’ll be trading modern conveniences for candlelight and the constant company of seagulls—an existence not terribly dissimilar from the one depicted in Robert Eggers’ 2019 movie, The Lighthouse—and the couple couldn’t be more delighted.

“Oh my gosh…it seems like such a dream come true,” Rosenfeld gushed to CBC Radio. “You wouldn't even think it would be a possibility. We feel really lucky that we were chosen.”

But make no mistake: this is not a vacation. Like Jack Torrance in The Shining, Rosenfeld and Hayes will become Great Blasket’s live-in caretakers, tasked with attending to the principal island of the Blaskets in County Kerry, Ireland. They will live in a small stone house on a windswept hill overlooking the gray, stormy seas at night. By day, they will run five holiday cottages and a coffee hatch for day-trippers visiting the island. “I genuinely think we will fall in with the rhythm of our new life and sense of freedom,” said Hayes, who has been to the island once before. “We won’t have the responsibilities of our jobs or day-to-day life, so it’s a chance to live a simpler life.”

“It looks like something from The Wizard of Oz

Located about a mile off the Dingle Peninsula in County Kerry, Great Basket Island— or in Irish, An Blascaod Mór—is a place of stunning natural beauty, where emerald hills glisten and below the cliffs lie sparkling turquoise waters. “It’s just so green, the greenest grass you’d ever see,” Rosenfeld said. “During a few weeks in the summer, there’s these beautiful purple flowers that bloom all across the fields. It looks like something from The Wizard of Oz.”

seals on beachHello, seals Start Travel

Once a flourishing fishing and farming outpost, Great Blasket Island was previously home to a tight-knit Irish community. For centuries, residents ate wildly caught fish and rabbits and harvested potatoes. In its heyday, the island nurtured a vibrant literary culture, with voices like Peig Sayers, Tomás Ó Criomhthain, and Muiris Ó Súilleabháin immortalizing the raw beauty and hardship of life there. However, by 1953, the island’s remaining inhabitants were forced to evacuate due to dwindling numbers and the lack of emergency services there during storms. Now, the island is a living museum of Gaelic heritage and a place where wildlife thrives.

While the island may not have many humans these days, Great Blasket Island is home to a great number of marine life: Gray seals (also known as “horseheads”) are the island’s star attraction, with their short flippers and hidden ears (gray seals lack ear flaps). During the late spring, thousands of gray seals come to Great Blasket to congregate, where they can be spotted among sharks, dolphins, whales, and seabirds. “We have no fears of anything around island life, not even the large number of seals that make their home on the beaches there,” the couple said. “We will deal with any issues as they come along.”

Landing the job

Billy O’Connor and his wife, Alice Hayes (no relation to James), who own the small collection of holiday cottages Camille and James will soon oversee, first advertised the live-in position in 2020. Initially, they were awash with over 80,000 applicants. Now, for their own sake, they’ve capped the number of applications to a mere 300. To deter hopefuls looking for a pleasant holiday, Billy and Alice try to stress the grueling nature of the job: “First, we try to put them off because if anything, it is quite romanticized,” says Alice. “But during the season, it can be quite intense for the caretakers. Most people, when they finish work, go home to their safe haven and relax. But I often say to people going out there that they won’t have that. You close the half-door where you were serving coffee, and you are home.”

Camille and James, on the other hand, are excited to trade a life in the fast lane for one that's much simpler. The two met in 2021 at the Burren College of Art, where Hayes was in residency as a visual artist, and Rosenfeld was studying abroad at the Rochester Institute of Technology, where she studied art and business. They’d actually applied for the caretaker position the year before, but the timing didn't work out because of their scheduled wedding.

couple, selfie by the waterMeet your new stewardsCamille Rosenfeld

When they reapplied the following year, Alice and Billy were ecstatic. "When we saw that Camille and James had applied again for the positions for this year, we were delighted as they are just so enthusiastic and committed to outdoor life," says Alice.

Stewardship: A growing interest in Europe

Besides being an excellent adventure for a newlywed couple, this hands-on approach to land stewardship is part of a growing trend in Europe. Land stewardship is increasingly being recognized as a practical and rewarding tool for nature and biodiversity conservation, often found at the intersection of environmental protection and sustainable economic practices. In the United Kingdom, for example, such land trusts play a significant role in managing protected areas and sites of natural importance. Ahead of their new jobs, Camille and James reflect on the part they’ll play in this larger context. "I think both Camille and I feel that we have been living our lives on aeroplanes travelling over and back to the US and out of suitcases with no set familiarity to our lives over the past three years and longer," James explains. Camille adds: "It will provide the time to take stock, immerse ourselves in island life and start the next chapter or new book of living our lives together in one place.”

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