Australia, California and Spain .
Apollo 11
The International Space Station communicates with Earth primarily through antennas and satellites. Data is transmitted using radio waves to ground stations located around the world. These ground stations then relay the information to mission control centers for analysis and communication with the astronauts.
Radio, possibly lasers. Not sure about that last but would not put it past the military and alphabet soup agencies. Seems to me that a laser could be aimed exactly at a satellite and so there would be no need to broadcast radio which other nations might be able to pick up.
Space probes typically transmit images back to Earth using radio waves. The images are converted into digital data and sent as radio signals to communication antennas on Earth. These antennas then receive the signals and decode them to reconstruct the images for scientists to study.
The major US space centers are located in different places, such as NASA's Kennedy Space Center in Florida, Johnson Space Center in Texas, and Marshall Space Flight Center in Alabama. Other important space facilities are also located in California, Virginia, and Ohio.
Deep Space Network expanded 64-m antennas to 70-m antennas. This info is strait from the nasa website
The Mercury program
2.
Apollo 11
The Deep Space Network (DSN) is a network of antennas and communication facilities used by space missions to communicate with spacecraft in deep space. It allows for continuous communication with spacecraft, enabling the transmission of data, commands, and navigation signals.
there where nine atsronuts :)
There were 2 astronauts on each Project Gemini mission.
There were two men in each Gemini module(The constellation Gemini is the twins)
Due to limitation in budget, the NASA is going to quit manufacturing Space Shuttles and again start making ordinary rockets.
James J Herbert has written: 'Technology needs of advanced earth observation spacecraft' -- subject(s): Radio antennas, Microwave antennas, Space probes, Space vehicles
Two. A command pilot (commander) and a pilot (technically a co-pilot -- a term which is taboo among astronauts).
They use the Deep Space Network which is a collection of microwave dish-type antennas placed at various points round the Earth in California, Spain and Australia. Radio signals from any spacecraft more than 30,000 km from the Earth can always be received by at least one of the stations. The antennas have diameters of up to 70 metres (230 ft).