That's the only way to communicate with sound where there is no air.
Nixon
So they can talk to each other and Earth, even though there is no air.Astronauts have radio transmitters on moon as they cannot communicate with each other.Sound cannot travel if there is no air. As there is no air on the moon astronauts need radio transmitters when they are on moon.
Sound needs air to travel through, and as there's no air on the moon. Astronauts have to use radios to talk to each other when in an envrionment without air. Radio waves travel through space and have no trouble traveling where there's no air.
Astronauts mainly communicate in space using radio waves. They use radios to talk to mission control on Earth and to communicate with each other inside the spacecraft. They can also use video conferencing and email for communication purposes.
Firstly, neither astronauts or radio existed in ancient times. Secondly, radio has always been used by astronauts and continues to be so, because it is the only thing that works across the distances and through the vacuum.
No, during the Apollo missions radio contact was cut off when astronauts orbited behind the Moon.
Astronauts can communicate with each other in outer space using radio waves. However, the lack of atmosphere in space means there is no medium for sound to travel through, so they can't talk to each other in the same way we do on Earth. Instead, they use radio communication systems built into their spacesuits or spacecraft.
They can and did quite easily, by radio between their suits. Inside the LM they had air and spoke as easily as anybody on Earth. (They couldn't whistle though, the air pressure in the LM was too low)
Sound is carried by vibrations of molecules. When you talk here on Earth, air molecules transmit the vibrations and allow others to hear you. In open space there are very few molecules at all so there is nothing to carry the vibrations. Radios use radio waves to transmit information from one to another. These waves move through space by themselves so they can be transmitted from one astronaut to another. Then the radio turns the wave back into sound in the air filled compartment the astronauts breath in.
Talk Radio was released on 12/01/1988.
The Production Budget for Talk Radio was $4,000,000.
Melbourne Talk Radio ended in 2012.