"explain why astronauts float when they are in their spaceship?"please answer my question right now.its urgent

the one reason that astronauts are floating when they are in the Space Shuttle/Space Station is because that the shuttle and/or station is free falling down towards earth all the time, however, the forward speed of the orbit is the same or slightly faster than the rate of free fall (around 17,500 miles per hour), thus keeping the astronauts and their "ship" in orbit around the earth.