Astronauts collect blood aboard the ISS | Space photo of the day for July 21, 2025
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Astronauts collect blood aboard the ISS | Space photo of the day for July 21, 2025

(Image credit: NASA)Aboard the International Space Station, astronauts work to study how the microgravity atmosphere affects human health, such as muscle development and bone structure.What is it?As part of a project to look at how microgravity affects cellular health, ISS Commander Takuya Onishi of JAXA (Japan Aerospace Exploration Agency) and NASA Expedition 73 Flight Engineer Nichole Ayers collect blood samples from the astronauts on the space station. Given that gravity is almost nonexistent on the ISS, it can make things like blood collection somewhat challenging, as things float away or have to be tied down.Where is it?This photo was taken aboard the ISS, around 250 miles (402 km) from Earth in low-Earth orbit. The crew on the ISS works to collect blood from other crew members. (Image credit: NASA)Why is it amazing?The blood being collected in...
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