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TIL that the original Apollo mission was concerned about losing the astronauts and capsule to quicksand on the Moon

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7rZ8L TIL Friedrich Nietzsche (1844-1900) and Richard Wagner (1813-1883) were frenemies, and one of the last nails in the coffin of their friendship was Wagner's allusion that Nietzsche's ill health was the result of "excessive masturbation".
e0444 TIL When Apollo 11 astronauts Armstrong and Aldrin left the lunar lander to step onto the moon, one of them broke off the toggle switch that armed the ascent engines. Aldrin jammed a pen into the resulting hole to arm the engines so they could get home.
wLZyM TIL wearing a blindfold for at least 12 hours can induce visual hallucinations, including complex scenery and frightening entities.
x4ow TIL when their child was diagnosed with xeroderma pigmentosa, a condition in which exposure to sunlight causes third degree burns and cancer, a New York couple founded Camp Sundown, a summer camp for kids with xeroderma pigmentosa where all normal camp activities are held after sundown.
oB74W TIL of Mary Elmes, an Irishwoman with an incredible history who saved over 200 Jewish children by smuggling them into Spain in the trunk of her car during the Holocaust