I read that astronauts are not weightless, they are just falling at the same speed as their spaceship. I don’t get it. Can you explain it?

Answered by Dr. Brian Tonks, Astronomy Professor, BYU-Idaho It is true—astronauts are not weightless. Weight, as scientists use the term, refers to the gravitational attraction of a planet (or moon) for another object. For example, when you step on a bathroom scale, it reads your weight, let’s say 100 pounds. This means that the Earth…