
Copernical Team
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Holistic approach to understanding Earth System science

Russian cosmonauts return to Earth after record ISS stay

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China advances space medicine to support future space exploration

Eutelsat partners with Mitsubishi Heavy for multiple satellite launches

What happens to a person when they're stuck in space?

What was supposed to be a weeklong test flight in space has turned into a months-long stay for astronauts Butch Wilmore and Suni Williams. While the unexpected delays from their mission may not have any negative side effects on the future of space exploration, it could affect their physical and mental health.
What happens to your body when you're in outer space?
Jacqueline McCleary, assistant physics professor at Northeastern University, says the term for the effects of being in space are summed up by the acronym RIDGE, which stands for radiation, isolation and confinement, distance from Earth, gravity fields, and hostile/closed environments.
All those factors can affect a person, McCleary says.
"All space flight involves being in a microgravity environment," she says. "Astronauts essentially … are perpetually falling in an elevator."
'Motion sickness on steroids'
The longest space mission on record was about 476 days, McCleary says, so knowledge on the long-term effects are limited and research is still ongoing.
Wilmore and Williams blasted off from Florida on June 5. So, as of Sept. 20, they have been in space 107 days.
A Soyuz capsule with 2 Russians and 1 American from the International Space Station returns to Earth

Low gravity in space travel found to weaken and disrupt normal rhythm in heart muscle cells

Johns Hopkins Medicine scientists who arranged for 48 human bioengineered heart tissue samples to spend 30 days at the International Space Station report evidence that the low gravity conditions in space weakened the tissues and disrupted their normal rhythmic beats when compared to Earth-bound samples from the same source.
The scientists said the heart tissues "really don't fare well in space," and over time, the tissues aboard the space station beat about half as strongly as tissues from the same source kept on Earth.
The findings, they say, expand scientists' knowledge of low gravity's potential effects on astronauts' survival and health during long space missions, and they may serve as models for studying heart muscle aging and therapeutics on Earth.
A report of the scientists' analysis of the tissues is published in the Proceedings of the National Academy of Sciences.
Previous studies showed that some astronauts return to Earth from outer space with age-related conditions, including reduced heart muscle function and arrythmias (irregular heartbeats), and that some—but not all—effects dissipate over time after their return.