Of 18 votes cast so far, Alexei Leonov — First Spacewalk (1965): On March 18, 1965, Soviet cosmonaut Alexei Leonov opened the hatch of his Voskhod 2 capsule and floated free into the vacuum of space, becoming the first human being to ever conduct a spacewalk. Tethered by a single cord, he drifted above Earth for just over 12 minutes — and nearly didn't make it back, as his suit ballooned so severely he had to bleed air from it to squeeze back through the airlock. It stands as one of the boldest firsts of the entire space age. leads with 28%.
Apollo 13 — "Houston, We've Had a Problem" & Splashdown (1970): Two days into their mission to the Moon, the crew of Apollo 13 heard a bang and reported the now-famous line "Houston, we've had a problem," after an oxygen tank exploded and crippled their spacecraft 200,000 miles from Earth. What followed was one of the greatest improvised rescues in history, bringing the astronauts home alive using their lunar module as a lifeboat, watched live on television as the world held its breath. is second on 22%, 6 points behind.
Votes have come in from 2 countries, most of them from China.
The most recent vote came in 5 days ago.