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In 2015, a Canadian astronaut named Chris Hadfield released his first album, which was entirely recorded while he was in orbit. Not only was he the first Canadian to walk in space, he's also a talented musician whose went viral with a cover of David Bowie's "Space Oddity." Hadfield spent 144 days at the International Space Station recording his 11 original songs for his appropriately-titled album, Space Sessions: Songs for a Tin Can.

Perhaps head-banging an effective way to keep warm. According to a Reddit user who created a map using data from Encyclopedia Metallum's archive of metal bands, Finland is home to the most bands of this genre, with 53.5 metal bands per 100,000 people. Second place was tied between two other Nordic nations Sweden and Norway (27.2), while Iceland stole third (22.7). Though heavy metal music originated in the United States and the United Kingdom, their numbers for those countries were 5.5 and 5.2, respectively.

Several free concerts have been reported to have an audience of one million (or more), but such numbers tend to be exaggerated. However, according to Guinness World Records, Rod Stewart's 1993 New Year's Eve concert on Copacabana Beach in Rio de Janeiro, Brazil, remains the most-attended free concert that ever took place. An estimated 4.2 million people were in attendance at this performance. The second most-attended free concert was Jean-Michel Jarre's September 6, 1997, performance at the University of Moscow, which reportedly had an estimated audience of 3.5 million.