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TIL Looking at the sky through a cardboard paper towel tube and through a standard drinking straw is about the same as the difference in the amount of sky seen in ordinary binoculars and a small telescope. Binoculars in astronomy are used for their wider field of view

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nb7G TIL Janis Ian met Bill Cosby on tour as a teenager. Cosby, presuming she was a lesbian, is alleged to have warned television shows that she was “not suitable family entertainment” due to her sexuality, and attempted to have her blacklisted.
KabQ TIL of Perotine Guernsey, a pregnant woman burned as a heretic in 1556; during the burning she delivered her son, who was rescued from the fire only to be thrown back in by order of the magistrate.
P1J0w TIL that after South Korea built a 323 ft (98 m) flagpole with a 300 lb (140 kg) flag near the DMZ, North Korea erected an even taller 525 ft (160 m) flagpole with a 600 lb (270 kg) flag on their side of the border.
Y7M87 TIL that in 2014, Scientists at UCLA published a study which demonstrated that muscle mass, independent of fat mass and cardiovascular and metabolic risk factors, was inversely associated with mortality risk in older adults
0wm6p TIL Chimney Swifts are among the most aerial and high-flying of all birds. These birds eat, drink, mate, and even sleep on the wing, but they alight to raise young.Their diet is mostly aerial plankton consisting of minute insects and newborn spiders. Pilots have reported seeing them at 7300 ft high.