› added 1 month ago

7

TIL that an object you were observing can disappear beyond the event horizon the point of no return around a black hole.

Read more nasa.gov

via reddit.com

AD1l7 TIL Apple almost put MS Windows on iMacs instead of Mac OS
7rADO TIL Mary Queen of Scots (1586) plotted to kill Queen Elizabeth I with secret coded letters. Walsingham (Elizabeth's secretary) cracked the code. He sent Mary a letter using her code, asking her to list all people involved in the plot. She thought the code was unbreakable.
4kl66 TIL about the Olympus 593, the only reheated (afterburner) engine used on a commercial plane (Concorde)
lKLN TIL That homeschooling is illegal in >25 countries, including Germany, Greece, Sweeden, Cuba, Brazil and Turkey
vOGB TIL any American with a DUI charge, no matter how old, will be denied entrance to Canada.