› added 5 years ago

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TIL on average Mercury, not Mars or Venus, is the closest planet to Earth

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XxKD TIL London has an elevated system of walkways between buildings that was more or less abandoned in the 1980s.
b674Z TIL Although an ace is usually associated with a pilot, there are also aces in the combat of tanks and submarines.
4Jmo TIL after days of hiding it from the world, Soviet was forced to acknowledge the Chernobyl disaster after an engineer at a power plant 1000miles away in Sweden surprisingly noticed radiation on his shoes on his way INTO the plant. They traced the wind patterns and reported the location of the source
mxemE TIL about the Shell Grotto in Margate, UK. An underground set of tunnels and passages covered from floor to ceiling in a mosaic made of seashells. It’s age and purpose remain unknown.
epAmE TIL the satellite LES-1 ceased transmissions in 1967, but randomly started transmitting again in 2012.