› added 5 months ago

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TIL There is a deep-sea fish which has a transparent head with eyes pointing upwards to see prey. It was discovered and described in 1939

Read more theguardian.com

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kwae TIL that sounds can still be heard in space despite the lack of air. Radio waves exist, emitted by planetary bodies, that can be detected by the human ear. NASA released audio files demonstrating this.
5A09 TIL a US PAN satellite was launched in September 2009 and is so top-secret that no military or governmental organization claimed to have built it.
9Ya4D TIL that before WWII, the Arizona state highway marker had a swastika on it because it was a symbol used by Native Americans in the state
wr5J TIL: Nintendo made a hands free controller for the NES, the A & B buttons were activated by blowing & sucking, while the D pad was controlled with the users tongue.
0wgrL TIL about Harry Wilhelm, an unemployed veteran who memorized the entire US Constitution during the Great Depression. Rep. Sol Bloom bet he couldn't recite it perfectly. When Wilhelm proved him wrong, Bloom immediately gave him a job.