› added 1 year ago

165

TIL That oxygen turns into a liquid when frozen, at ‑297 degrees F (‑183 C). This liquification compresses it and allows it to fit in a smaller, lighter tank.

Read more blogs.nasa.gov

via reddit.com

rRMW0 TIL The percontation mark ⸮, sometimes called the 'irony mark', was a 16th-century suggestion for indicating a rhetorical question. Who knew⸮ Could we have messed this up any more⸮ etc.
oRPWK TIL even though Elijah Muhammad's many infidelities with his personal secretaries were used as a reason for Malcolm X's break from the Nation of Islam, Malcolm started his own affair with a secretary from his OAAU organization that lasted until his assassination.
rNw4d TIL about Franklin and Armfield, the largest slave trading firm in US history. Adjusted for inflation, the company was worth billions of dollars.
1X17 TIL Donald Unger cracked his left hand knuckles everyday for 60 years but did not do so on his right hand. Proving that cracking knuckles had no effect on his health he earned a 2009 Ig Nobel Prize in Medicine.
6oVZ TIL that earth has several other companions additional to our moon, such as Cruithne and the trojan asteroid 2010 TK7, which is about 300 meters large, and revolve the sun coupled to earth’s orbit.