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TIL Hubble can get detailed views of distant galaxies but not of Pluto

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D1p5g TIL the "bus factor" is the minimum number of team members that have to suddenly disappear from a project before it fails due to lack of knowledgeable or competent personnel.
R7vB6 TIL of Fred the labrador, resident dog at Mountfitchet Castle in England, who adopted 9 orphaned ducklings who were wandering the castle grounds after the mother duck disappeared. When Fred goes swimming the the castle moat, the ducks follow him in.
ADoBx TIL that thread is measured in lengths called Lea (120 yds/110 m), Hank (a length of 7 leas) and Spyndle (14,400 yards/13,200 m), and Thread (54 inches/1.4 inches). Denier refers to the weight (in g) of 9000 m of thread. A single thread of silk 9000 m long weighs about a g, so it's 1 denier.
J1y1B TIL the original Godzilla suit was made out of concrete due to shortages of rubber in post-war Japan. The suit weighed 100kg and became hot to even touch it.
N716Q TIL on 1956, to fight school integration, Mississippi repealed its compulsory attendance law