As we celebrate the 50th anniversary of the Apollo 11 moon landing this week, it's hard not to look up in the sky with pride. Not only for America, but for the world. And in looking over some of the amazing events that occurred in conjunction with this momentous occasion, I've been seeking out other cool 'space things'. And I found one that is as breathtaking as it gets.

On May 12, 2013 Canadian astronaut Commander Chris Hadfield posted a video to YouTube that was, and is, pretty amazing. It even got the attention of the original performer, David Bowie. The video for 'Space Oddity', recorded during his last mission on board the International Space Station, was the first and only video filmed entirely in space. And according to the Guinness World Records,'The vocals and guitar were recorded on the ISS, while piano and other musical accompaniment were added by performers on Earth. The video was mixed with the help of the Canadian Space Agency.'

Bowie tweeted out 'Hallo Spaceboy...', which was the title of his 1996 hit single, in response to Hadfield's video. So far it has amassed an incredible 43 million views on YouTube. Watch below, and happy 50th Apollo 11!