Astronauts aboard the International Space Station collect blood samples as part of a project to study human health in space.

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

Source: space
Source Link: https://www.space.com/space-exploration/astronauts-collect-blood-aboard-the-iss-space-photo-of-the-day-for-july-21-2025