Shuttle Gross liftoff weight: 240,000 lb (109,000 kg) Empty weight: 172,000 lb (78,000 kg) Maximum payload: 55,250 lb (25,060 kg) The weight of the main external tank and fuel, and the solid-fueled boosters are not included. * The current orange "super-lightweight tanks" are 58,500 lb (26,560 kg) empty, and have a fueled liftoff weight of 1,680,000 lb (762,100 kg) * Each SRB weighs approximately 1,300,000 pounds (590,000 kg) at launch This yields an approximate total vehicle weight of 4.5 million lb (2 million kg). A widely quoted NASA figure is 4,474,574 lb (2,029,203 kg).
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Empty weight 78,000 kg
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A space shuttle's weight at liftoff is approximately 4.5 million pounds.
Space food is dehydrated in order to greatly reduce the weight of the food because space and weight are prime real estate on a space shuttle.
When in space, it is weightless. But it still takes energy to move the mass around. Shuttle Gross liftoff weight: 240,000 lb (109,000 kg) Empty weight: 172,000 lb (78,000 kg) Maximum payload: 55,250 lb (25,060 kg) Maximum landing weight: 230,000 lb (104,000 kg)