Britain launched its only satellite on a homegrown rocket
On this day · 28 October 1971
On October 28, 1971, the Prospero satellite rode a British Black Arrow rocket to orbit, an achievement the country never repeated.
At dawn on 28 October 1971, a slender Black Arrow rocket lifted off from Woomera, Australia, and carried the Prospero satellite into orbit. With that single flight, the United Kingdom became the sixth nation able to launch a satellite on a rocket of its own design.
Prospero, a modest sphere studded with solar cells, was built to test how the space environment wears on communications hardware. It worked, and kept working: ground stations checked in with the satellite for decades after its mission formally ended.
The twist is that Britain had already pulled the plug. Ministers cancelled the Black Arrow program months before the launch, deciding it was cheaper to fly the rocket already shipped to Australia than to haul it home.
So Britain joined the orbital club and quit it in the same breath.
No British rocket has reached orbit since. Prospero, meanwhile, is expected to circle Earth until roughly 2070, a quiet monument to a space program that ended at its high point.
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