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TIL of a region near a black hole called a photon sphere where the gravitational pull is so strong that light photons orbit it, meaning if you were at that point and turned to the side, you could see the back of your own head.

Ek0d TIL eating instant noodles two or more times a week has been associated with cardiometabolic syndrome, which raises a person’s likelihood of developing heart disease
XElEj TIL Tom Clancy wrote his 1st book 'The Hunt for Red October' in 1982 and hoped to sell 5,000 copies but ended up selling 45,000 copies. The book received praised from Ronald Reagan leading to a further 300,000 hardcover & 2 million paperback copies sold.
N9DP TIL that the dog who played Wishbone on the 1990s children’s show of the same name was named Soccer and was a veteran television commercial actor before appearing on the series. He lived from 1988 to 2001 and is buried on the Plano, Texas ranch where Wishbone was filmed.
J1LVj TIL that a popular Halloween song, "Thriller," was written by an Englishman named Rod Temperton. He wrote a number of top hits for other recording artists, won a Grammy award and was nominated for an Oscar. His nickname was "The Invisible Man" because he chose to stay out of the limelight.
5KeB TIL surgeons wear green or blue-coloured scrubs because they’re the complementary to red (blood), thus allowing the surgeon to better visualize the patient’s inside, and avoiding eye strain, loss of concentration and the ‘after effect’ illusion.