they used radios in the helmet of their spacesuits.
Morse code.
-- If they're in the same vehicle, capsule, space station etc., in a 'shirt-sleeve' environment, then they communicate with each other conversationally, by the use of their mouths and vocal apparatus. -- If they're in different vehicles, or separated by vacuum such as walking together on the moon, or communicating with controllers or other people on Earth, then they communicate by radio.
apparently no
People in Slovenia communicate mostly by talking.
yes emotion can communicate with people !!!
to communicate
how do george and harold communicate with the cave people
They communicate by sign language. Well at least people that are deaf do.
they pray to communicate with God
They communicate by talking like regular people...
i think they communicate by radio
They communicate using antennas on their heads