Skylab uncontrolled reentry (July 1979)

Skylab, the United States' first space station, made an uncontrolled re-entry on 11 July 1979, scattering surviving debris across the southern Indian Ocean and sparsely populated parts of Western Australia near the town of Esperance. Launched in 1973, the roughly 77-tonne station had been left in orbit after its final crew departed in 1974.

A reboost that came too late NASA had hoped to use the Space Shuttle to raise Skylab's orbit and extend its life, but higher-than-expected solar activity increased atmospheric drag and the station's orbit decayed before the Shuttle was ready to fly. With no propulsion of its own, Skylab could not be commanded to a controlled re-entry, and engineers could only nudge its orientation to influence — but not precisely target — where it would come down.

Aftermath No one was injured. The event became one of the most famous uncontrolled re-entries in history and an early, very public lesson in the responsibilities that come with putting large structures in orbit.