What is the International Space Station (ISS)?

The International Space Station (ISS) is a habitable, artificial satellite in low Earth orbit, whose first components were launched into space in 1998.

ISS Construction - NASA
Astronauts work on the ISS’ construction

The International Space Station is composed of 15 different modules – seven that are American, five Russian, two Japanese and one European. The ISS provides a unique 800+ cubic meter platform for experiments that cannot be performed anywhere else. With call-sign Alpha, the ISS orbits Earth every 92.85 minutes travelling at a speed of 27,600 km/h. The maximum crew capacity of the International Space Station is 6 with a typical astronaut load of 3. The ISS includes an amateur radio (Ham radio) on board and astronauts use it to communicate on 145.80 (downlink) and 144.49 / 145.20 Mhz (uplink) frequencies with other Hams.

ISS - NASA
International Space Station (ISS)
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