The Insides of These Everyday Objects Are Totally Unexpected

Stream Train

Who knows who comes up with some of the most incredible inventions of all time? Steam trains were revolutionary at the time of their release, though these days we rarely think about them at all. Here, you can take a peek into how one of these things works and operates...

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The More You Know

  • The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
  • Tarantula bites are about as painful as bee stings.
  • Fear of the number 13 is called triskaidekaphobia.
  • The stars and flashes of light you see when you rub your eyes are called "phosphenes."
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