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An astronaut is about 29.5 in (75 cm) long and 6.4 ft (1.95 m) tall, weighing 463 lb (210 kg). A satellite is about 8.2 ft (2.5 m) long and 6.56 ft (2 m) tall, weighing 1.65 US tons (1.5 tonnes). In this comparison, the satellite is about 1.28 times the size of the astronaut.

How much space each takes up
Satellite is about 1.28 times the size of astronaut.
Typical adult or standard sizes; real ones vary.