Sound needs to travel in medium like air, but there is no air in outer space, so sound is unable to travel.
So basically sound needs air to travel, if there is no air sound cannot travel, when sound is unable to travel you cannot communicate (talk, speak, etc)
to communicate with someone
So they can communicate.
When they're inside their spacecraft, in the "shirtsleeve" environment, and the spacecraft is full of air, they don't need walkie-talkies, and are able to communicate in the usual way, using only mouths and ears. But if they're operating in an environment without air, such as during a "space-walk" or on the moon, then they need to use radio. The reason for the difference is the fact that sound needs a substance to travel through. If there is no air between the speaker's mouth and the listener's ear, then sound cannot make the trip, and another means of communication is required.
Well they could try walkie talkies.?
Usually by word of mouth.. but if they do have to become separated.. they use advanced Walkie Talkies.
they used walkie talkies in space to communicate with each other
Apart from mobile phones, good wireless communicators are walkie-talkies. Walkie-talkies are 2 way radios and are used by all kinds of amateurs around the world to communicate.
Radios or talkies. It's basically the only way to communicate.
There is no air on the moon. Sound waves only propagate through a medium, such as air, water, etc. Sound waves cannot propagate through a vacuum, therefore the astronauts had to use radios to speak to each other.
Gulabi Talkies was created in 2008.
Madras Talkies was created in 1995.
The duration of Gulabi Talkies is 2.03 hours.