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TIL Astronomers have discovered 18 giant blue stars being ejected out of our galaxy and scientists are unsure how the stars are being propelled.

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via ift.tt

4KRw TIL that illegal immigrants contribute roughly $15billion a year to Social Security, despite not being able to receive benefits for doing so due to falsified information or simply not being eligible.
a8N9Z TIL there's a music piece called "As Slow as Possible" that has a duration of 639 years. It can take years for a single note to be played.
m1w0E TIL of Philae 436, likely the very last ancient Egyptian heiroglyphs to be carved.
rNOld TIL A 14 August 1912 article from a New Zealand newspaper contained a brief story about how burning coal might produce future warming by adding carbon dioxide to the atmosphere.
D1oKj TIL that almost 4,000 years ago, ancient Egyptian teachers used red ink to correct spelling mistakes, just like today.