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TIL Mark Lenard, best known for his role as Sarek, the father of Spock, first appeared in the first season of Star Trek: The Original Series, playing the first Romulan ever seen in the series, in the episode "Balance of Terror" (1966).

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xVjWb In the vacuum of space, spacecrafts have to achieve propulsion and steering through more reactive means.
9YKVp TIL: the Defense Production Act of 1950 provides broad powers to the executive branch to mandate certain contacts with the private sector & otherwise control the civilian economy in order to ensure the production & supply of key goods in times of national defense.
ADakw TIL TV host Soupy Sales was once suspended for asking his young viewers to send him "little green pieces of paper" taken from their parents' wallets.
NXVy8 TIL swans in the United Kingdom belong to the crown, except in Orkney and Shetland: there they are the property of the people due to udal law, a Norse-derived legal system
ovoL TIL A smart phone’s nanotech based accelerometer can tell when it is being dropped and allow the phone to shut down parts of its hardware to protect it. That is why you see a lot of cracked glass on perfectly usable iPhones.