In the late 1950s and early 60s, when space travel was in its infancy, the USSR closely guarded its technological secrets - keen not to let the Americans get the upper hand.

But, as Natalia Sidlina, one of the curators of the Science Museum’s new exhibition, explains, Communist leaders also wanted Russians to celebrate the advances the country was making.

“How do you go about creating propaganda for an industry which is so heavily classified?” she says.

Posters were the answer. —Posters of the golden age of Soviet cosmonauts - BBC News