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Is 55 tonnes as heavy as The Space Shuttle?

It's about three-fourths as heavy as The Space Shuttle
The weight of The Space Shuttle is about 71 tonnes.
(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 71 tonnes. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 20 tonnes.
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