Question

Can two astronauts talk to each other in space? Why?

Answer 1

1. No, two astronauts cannot talk to each other in space.
2. Sound needs a material medium for its propagation.
3. In space, there is no medium i.e vacuum, so sound cannot travel in space.
4. So, when two astronauts are trying to say something in space, due to the absence of a medium the sound cannot travel from one astronaut to another astronaut.