When you watch videos of astronauts in space, they are seen floating. Also, when Richard Branson and his crew traveled to the space, the video showed them floating. When Jeff Bezos and his crew traveled to the space, the video showed them floating. So, why do astronauts float around in space?
There is no gravity in space. That is why anyone who goes there, float. The farther you get from Earth, the less the gravitational force is. When astronauts are ins space, they are so far from the Earth that gravity is so small. This is why NASA calls it microgravity.
In space, no one can hear you scream. You know why? Because there is no air in space. No air, no sound. No air, no gravity. Simple.