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TIL that the smallest type of black holes are called primordial black holes and they can be as small as a single atom but with a mass of a large mountain

Read more nasa.gov

via reddit.com

NWoJ TIL wearing sunglasses makes you more susceptible to becoming sunburned. Sunlight stimulates the optic nerve and warns the pituitary glad. This results in the release melanocyte stimulating protein in an attempt to prevent burns
RDA4 TIL that until the late 19th century shoe pairs were made with no difference between the right and left shoe. They were made with two identical straight “lasts” that would constitute the pair.
X0PBP TIL That Typhoon Tip was the largest most intense storm ever recorded, with winds 190 mph and size of 1380 miles wide in the south pacific, north of the Solomon Islands in 1979. Hurricane Patricia (2015) had the highest winds at 215 mph but was smaller in size and didn't last as long.
5J69 TIL I learned that the first law suit to legalize homosexual marriages in the United States was brought by a Christian Church.
l677 TIL we frequently abbreviate Christmas as X-mas because of ancient tradition. X is the Greek letter “chi” which is an abbreviation for the word “Christ” in Greek.