We see images and videos from the International Space Station (ISS) where astronauts float in space freely. That’s because they’re in space, so there is no gravitational force of Earth there, right? Wrong. The International Space Station is in Low Earth Orbit (see notes 1) with an altitude of between 330 and 435 km (205 …
Continue reading “Why do astronauts float in space? [Microgravity explained]”