Can You Get Your Period in Space?
Picture this: you’re floating around in zero gravity, eating freeze-dried ice cream, casually orbiting Earth at 28,000 km/h. Then suddenly... your period arrives.
First of all, rude. Second of all, can that even happen?!
It’s one of those questions I randomly thought about at 2 a.m: What happens if you get your period in space? The answer is actually pretty fascinating.
Space Changes a Lot of Things. Your Cycle Isn’t One of Them.
When women first began traveling to space, researchers genuinely didn’t know how menstruation would behave in zero gravity.
Would periods stop?
Would hormones change?
Would blood flow differently in microgravity?
According to research on menstruation during spaceflight, the answer is: nothing really changes.
While space travel can impact everything from muscle density to bone mass, the menstrual cycle itself doesn’t seem to change much at all. The uterus still sheds its lining normally, and the body still relies on muscular contractions and internal pressure, rather than gravity, to expel menstrual blood. The more you know!
Fun fact: the first woman in space was Valentina Tereshkova in 1963. At 26 years old, she orbited the Earth 48 times over almost three days and remains the only woman to have flown a solo space mission!
The Bigger Question Isn’t Can You Have a Period in Space. It’s Do You Want To?
The answer for many astronauts is: absolutely not.
Most astronauts who menstruate choose to suppress their periods using hormonal birth control during missions. Not because periods are dangerous in space, but because they’re… inconvenient. Which, to be fair, is also why approximately half of us have considered deleting our uterus after one particularly bad cramp day.
On shorter missions, astronauts could simply time their cycles around launch dates. But missions on the International Space Station can last six months, and future Mars missions could stretch into years. That’s a lot of tampons to pack.
And in space, every single item matters. Weight matters. Storage matters. Waste matters. NASA calculates payloads down to the gram, which means period products become less of a “throw a few extras in your tote bag” situation and more of a carefully engineered logistical equation.
Which makes one famous NASA story even more hilarious. In 1983, ahead of astronaut Sally Ride’s first trip to space, NASA engineers reportedly asked her an important question: Would 100 tampons be enough for a six-day mission?
At the time, NASA’s engineering teams were still largely male, and apparently they were too busy building spaceships to calculate a simple tampon-to-period ratio. Eye roll.
Wait, Does Period Blood Float Around the Spaceship?
Thankfully, no.
Despite what our high school science brains might imagine, period blood doesn’t suddenly drift around the cabin like a horror movie lava lamp. The body still uses muscular contractions and internal pressure to move blood the same way it does on Earth. So while astronauts float, their periods do not. A win for everyone involved!
Space Travel Is Cool. Having Your Period Still Requires Logistics.
Honestly, this might be the most relatable thing about astronauts. Whether you’re preparing for a mission to the Moon or just trying to survive a six-hour flight with airplane bathroom turbulence, periods require planning.
You need products that are comfortable, reliable, low-maintenance and not actively trying to ruin your day.
Which is probably why we imagine Leakproof Underwear would absolutely thrive in space. Breathable, reusable, designed for movement, and significantly less stressful than wondering whether your tampon supply calculations were accurate enough for interplanetary travel. NASA, if you’re listening, call us!
Houston, We Have a Period.
So, it’s settled. You can orbit Earth, conduct zero-gravity experiments, and watch 16 sunrises in a single day… and still get your period. That feels pretty beautiful, and deeply human, to us.
