How do astronauts communicate when hovering in space?
 
In outer space, the sound can not propagate because there is no air. An astonaut communicates by attaching his head to each. The sound travels through the astronaut's cap.
By. @wondo
How do astronauts communicate when hovering in space?

In outer space, the sound can not propagate because there is no air. An astonaut communicates by attaching his head to each. The sound travels through the astronaut's cap.
By. @wondo