to go and find wifes and marry people
UHF radio
People on Earth communicate with astronauts in space through a series of communication networks such as NASA's Tracking and Data Relay Satellite System (TDRSS) and ground stations around the world. Astronauts use specially designed radios and equipment on the International Space Station to speak with mission control centers on Earth.
radio waves
radio waves
-- 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.
Astronauts communicate with people on Earth using communication systems such as satellites, radio waves, and ground stations. They use specialized equipment on the International Space Station or spacecraft to establish connections with mission control centers on Earth. These systems allow for real-time communication between astronauts and ground control teams.
by telephone
Apollo 11 communicated with people on Earth using a system of radio signals. The spacecraft transmitted signals to antennas on Earth, which were then decoded and relayed to mission control. This allowed astronauts to communicate with ground control and the world during the mission.
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.
to study Earth and space
Microwaves are typically used to communicate with satellites in space due to their ability to penetrate Earth's atmosphere and transmit data over long distances reliably.
Gravity on earth lack of it in space