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TIL that we can observe more than just one side of the Moon from Earth. About 59% of the surface is visible due to Moon’s slight wavering. It's called libration.

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4XnNa TIL that in 1953, an Australian Centurion main battle tank survived a nuclear test that was only 500 yards away. Later nicknamed the Atomic Tank, it went on to serve in the Australian military for 23 more years, including 15 months of service in Vietnam.
vPpyj TIL Rudolf Diesel, the inventor of the diesel engine, disappeared under mysterious circumstances while at sea in 1913. Ten days after his disappearance a body was found floating with some of his belongings, but was so decomposed it was unrecognizable and was not kept. The case has remained unsolved.
8k44 TIL that, when petting a bird, one should pet only the head. For some birds, petting the chest is a form of sexual stimulation and can lead to a frustrated animal.
b9xJp TIL that in 2016, Congressman Peter Welch won both the Democratic and Republican primaries in his state.
E1aZW TIL Tiny portions of the Wright Flyer were taken to the moon and back aboard Apollo 11 in 1969. Another few were taken aboard the Challenger on it’s final flight, and recovered from the wreckage. All of these pieces are now in display in North Carolina.