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The Amazing Cosmic Coincidence That Makes Total Solar Eclipses Possible

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One of the reasons a total solar eclipse is possible is because of an amazing cosmic coincidence: the Sun is four hundred times larger than the Moon but is also four hundred times farther away. This makes them seem like they are relatively the same size from our perspective here on Earth.Aug.15.2017

Mach

  • An immersive ski simulator that lets Olympic skiers train in virtual reality

    03:50
  • It’s official, Switzerland is fast becoming a 'Crypto-Nation'

    01:03
  • Learning to Fly: Wind tunnel training takes ski jumper Sarah Hendrickson to new heights

    06:15
  • Everything you need to know about the science of Curling

    02:34
  • As the flu season shows signs of leveling off, a look back at how the flu vaccine came to be

    03:02
  • An algorithm to choose your valentine?

    02:47

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