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139.620 tons is about one-and-four-fifths times as heavy as The Space Shuttle
In other words, it's 1.8 times the weight of The Space Shuttle, and the weight of The Space Shuttle is 0.56 times that amount.
(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 78 tons. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 22 tons.
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