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TIL while viewing a solar eclipse on 18 August 1868, French astronomer Pierre Janssen made an observation that led to the discovery of helium. It was the first time a chemical element was discovered on an extraterrestrial body before being found on the earth.

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jNdrv TIL Narcissist abusers learn about your insecurities and use this knowledge maliciously to provoke you. Their faux "innocence" works to catch you off guard and make you believe that they truly didn’t intend to hurt you, until it happens so often you can’t deny the reality of their malice any longer.
gMwrX TIL that Bill Murray has no agent or manager. To be reached for a role, filmmakers must call a 1-800 number in hopes that Bill will call them back.
r8Re TIL An Israeli team of researchers invented a breathalyzer that can detect 17 different diseases, including two types of Parkinson’s, Crohn’s, multiple sclerosis, kidney disease, and cancers including lung cancer, colorectal cancer, prostate cancer, and ovarian cancer.
NX8X6 TIL FBI agent John O’Neill, who left his federal position because his attempts to warn of an imminent al-Qaeda attack on U.S. soil in early 2001 were ignored, got hired as the WTC chief of security three weeks before 9/11 and was killed in the attack.
m0JP TIL Daniel Day-Lewis declined the role of Lincoln because he didn’t know if he could play such an iconic role. It was Leonardo DiCaprio who convinced him to take the role after Spielberg told him that Day-Lewis declined. It is unknown how DiCaprio convinced Day-Lewis to take the role.