10 simple space flight questions that are difficult to answer

A young visitor at the Moscow Memorial Museum of Cosmonautics during the events devoted to the 50th anniversary of the man's fist spacewalk.

A young visitor at the Moscow Memorial Museum of Cosmonautics during the events devoted to the 50th anniversary of the man's fist spacewalk.

Vladimir Astapkovich/RIA Novosti
If we exclude Star Wars and Star Trek, most educated people know only two things about the sky above: 1) Soviet cosmonaut Yuri Gagarin was the first human in space; and 2) American astronaut Neil Armstrong was the first human on the Moon. On Cosmonautics Day, RBTH asks 10 questions to find out how much more you just might know about what’s been going on in outer space.