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TIL a comets tail always points away from the sun and has nothing to do with the way it is accelerating. This means that the comet can be going into its own tail.

Read more astronomy.swin.edu.au

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yXmv TIL the Vietnam war was the only war in which military dogs were classified as expendable equipment, and not allowed to return home. 3800 out of 4000 dogs were left behind.
Me7m0 TIL the original developer of Plants vs. Zombies was fired after objecting to its sequel becoming more pay to win
Oojkg TIL That there was a professional football league in the 80s known as the USFL and fielded a team from New Jersey known as the Generals
YO7x TIL Johnny Cash was born with the name J.R. Cash because his parents couldn’t think of a name. When he enlisted in the Air Force, they wouldn’t let him use his initials, so he began to call himself John.
b9QZp TIL: Methuselah is the world’s oldest known living tree. Seeded in 2833 BC (4,851 years old). The tree is so well protected that its exact location is a closely guarded secret, known only to a select few.