NOVA

The Planets: Inner Worlds

Season 46 Episode 12 | 53m 49s

The rocky planets—Mercury, Venus, Earth and Mars—were born of similar material around the same time. Yet only one of them supports life. Were Earth's neighbors always so extreme? And is there somewhere else in the solar system life might flourish?

Aired: 07/24/19 | Rating: TV-PG

Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.

Watch Preview

Extras From This Episode

• Behind the Scenes: The Making of "The Planets"

  Clip: S46 Ep12 | 4m 26s

• Five Facts About Hot, Volcanic Venus

  Clip: S46 Ep12 | 58s

• Five Facts About Our Home Planet

  Clip: S46 Ep12 | 1m 4s

More Episodes

• Decoding da Vinci

  S46 Ep21 | 53m 31s

• Why Bridges Collapse

  S46 Ep18 | 53m 9s | WETA Passport

• Back to the Moon

  S46 Ep11 | 53m 39s

More Science and Nature Shows

• Nature

  Capturing the splendor of the natural world, from the African plains to the Antarctic ice.

• Changing Planet

  Changing Planet revisits six of our planet's most vulnerable ecosystems.

• America Outdoors with Baratunde Thurston

  Explore our passionate relationship with outdoor spaces.

• The Green Planet

  Sir David Attenborough travels the globe to reveal the secret, incredible world of plants.

• Expedition

  Join Steve Backshall in uncharted territory to uncover the world’s last unknown places.

• Rivers of Life

  Explore the Amazon, the Nile and the Mississippi rivers in this three-part series.