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TIL shortly after its launch the Telstar I communications satellite showed the power of instant communication - a satellite broadcast of the US president claiming that the USA wouldn't devalue the dollar immediately led to the currency strengthening on global markets.

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p8NvA TIL about HERA, a telescope searching for the oldest stars in the universe, from a period known as the Cosmic Dark Ages. And it is built from stuff you could buy at any local hardware store. "This is the beauty of low frequency radio astronomy: one doesn’t need custom, expensive hardware."
KYZ6E TIL of the ancient law of General Acerage. If a ship carrying cargo needs to jettison some of its load to save the rest, that loss is to be shared proportionally among interest holders and the ship owner. First written into law in 800BC, it continues to be declared in maritime emergencies.
0PpN TIL that the Chinese phrase for “the general public” literally translates to the “Old 100 Families” as the 100 most common Chinese surnames account for 84.77% of China’s population. To reach this percentage in the US, you’d need to include approx. 150,000 surnames.
E1yaw TIL that during the chrysalis faze of metamorphosis, a caterpillar digests itself by releasing enzymes that break down all of its tissues. Specialized groups of cells survive the process and use the protein-rich soup to build the adult body parts of the butterfly.
QkjX TIL Rick Moranis, beloved comedian who retired to raise his family in the late 80’s, is a semi-active musician