almost exclusively by radio
They have radio.
they have radios, silly
with a cellphone
They communicated by radio.
People on Earth communicate with astronauts in space by a special radio and use the word houston like a secret spy code name to signify their calling
Astronauts have never traveled anywhere but the Moon.
They have radio.
radio waves
radio waves
they have radios, silly
no i like pi
Because space is a vacuum.
They use radios built in their space suits.
with a cellphone
They communicated by radio.
People on Earth communicate with astronauts in space by a special radio and use the word houston like a secret spy code name to signify their calling
it makes big farts that go into space