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TIL Galileo was the first to confirm the Moon's rough and uneven surface using a specially-engineered telescope and the first to find sunspots. Both findings, in addition to his observation of Jupiter's moons revolving the planet, helped disprove Aristotle's theory of a geocentric universe.

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16O58 TIL of the Clacton Spear. It is the remnant of a wooden spear that was crafted about 400,000 years ago, making it older than the evolution of modern humans and the oldest known example of a wooden tool created by a hominid.
1aAPO TIL Transgender communities in India speak a secret language thought to have originated more than 200 years ago.
VMyw0 TIL scientists have discovered an exoplanet that resides within its star's habitable zone, has a temperate climate and contains water at its surface. However, even with spacecrafts much faster than our current ones, it would take a crew of 98 members 6,300 years to reach the Earth-like exoplanet.
x6p8w TIL the Beatles were not legally dissolved as a band until 1974 when John Lennon signed the final contract while on vacation at Disney World in Florida
9YWeB TIL in 1889, President Harrison signed identical documents that created North and South Dakota as states. No one knows which state was the 39th or the 40th to enter the Union because Harrison signed the documents blind and declared, “They were born together; they are one and I will make them twins."