The information transmitted by the Hubble Telescope each week would fill a shelf of books two-thirds of a mile long.
Hubble orbits about 340 miles (547 kilometers) above Earth, on a path inclined 28.5 degrees to the equator. Its average speed is 17,000 mph (27,000 kph), and it takes 95 minutes to complete one orbit. — Hubble transmits about 120 gigabytes of science data every week. That would be roughly 3,600 feet (1,097 m) of books on a shelf.