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Could comets be the source of life on Earth? - Justin Dowd

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While comets were historically thought to be ill omens of war and famine, recent science has revealed that these celestial wonders actually contain amino acids, the building blocks of life on Earth. Justin Dowd explores the implications of this magnificent discovery.

A NASA spacecraft collected dust from a comet's tail. In the next few years a satellite will collect samples from a comet's core. What other discoveries do you think are waiting in space?

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TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Justin Dowd
  • Animator Justin Dowd
  • Script Editor Alex Gendler
  • Narrator Pen-Pen Chen

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