Watch NOVA Season 48 Episode 12 - The Planets: Inner Worlds

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NOVA Season 48 Episode 12
The rocky planets - Mercury, Venus, Earth and Mars - were born of similar material around the same time, yet only one supports life. Were Earth's neighbors always so extreme? Is there somewhere else in the solar system where life might flourish?
First Aired: July 24, 2019

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NOVA, Season 48 Episode 12, is available to watch free on PBS and stream on PBS. You can also stream, download, buy, rent NOVA on demand at iTunes online.