How do space shuttles get into orbit?

Answer:

To lift the 4.5 million pound shuttle from the pad to orbit (115 to 400 miles) above the Earth, the shuttle uses two solid rocket boosters, three main engines of the orbiter, the external fuel tank and the orbital maneuvering system on the orbiter. The solid rockets provide most of the main force or thrust needed to lift the space shuttle off the launch pad.

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