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TIL Neil Armstrong had pieces of the propeller and wing of the Wright Brothers’ Wright Flyer in his pocket as he took mankind’s first steps on the moon.

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DdOr TIL an Area 51 researcher claims that the “aliens” that allegedly crash-landed there were WWII POW’s who were being experimented on to study the risks of space exploration on the human body and that the images of aliens are, therefore, derived from that of humans whose bodies were destroyed.
GYa0E TIL that the pipe organ is more than 1000 years older than the piano, which means someone thought it was smarter to build a whole cathedral around a single instrument than just build a new instrument.
1aodr TIL 4-dimensional printing uses the same techniques of 3D printing through computer-programmed deposition of material in successive layers to create a three-dimensional object. However, 4D printing adds the dimension of transformation over time. It is therefore a type of programmable matter.
MGlV TIL a family-friendly game developer went into a depression after people repeteadely criticized his game character for looking like ‘a scary animatronic’. He overcame depression, was inspired to make a horror game, and went on to create 'Five Nights at Freddy’s’.
XEga6 TIL of Muhammad Ali Pasha, an Albanian who rose through the ranks of the Ottoman army to become viceroy of Egypt. While viceroy, he destroyed the first Saudi state, conquered Sudan, and launched a rebellion which almost overthrew the Sultan, before being halted by European intervention.