Episode
How the Universe Works: The Search for a Second Earth
Overview
Is there another Earth out there with liquid oceans, rocky continents and life like us? Astronomers seek the answer with spectroscopy, direct imaging and telescopes. They hope to find evidence of atmospheres, magnetospheres and signs of life.
Details
- Series
- How the Universe Works
- Season
- Season 3
- Episode
- Episode 9
- Air date
- 2014-09-03
- Runtime
- 42 min
Episode context
The Search for a Second Earth is Episode 9 in Season 3 of How the Universe Works. It aired on 2014-09-03. The runtime is 42 min.
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More episodes from this season
Episode 7: Did a Black Hole Build the Milky Way?
What built the Milky Way? New research might now have the answer, revealing an unlikely hero. At the heart of our galaxy sits a super massive black hole, one of the most destructive objects in the Universe. Could it be our creator?
Episode 6: Weapons of Mass Extinction
Asteroids strike, planets collide, black holes blast out death rays, volcanoes erupt and ice engulfs the planet. These are the universe’s weapons of extinction. They’ve happened before - wiping out entire species, and they will happen again. Are we next?
Episode 5: Is Saturn Alive?
Saturn’s secrets are out. The ferocious weather, the evolving ring system and the discovery of active geology on Saturn’s moons has rewritten the textbooks. Scientists are looking for life on Saturn’s moons and they may have found it on Titan.
Episode 4: First Second of the Big Bang
The first second of the Universe, the creation of everything when space, time, matter and energy burst into existence. It is the most important second in history, which seals the Universe’s fate and defines everything that comes after - including us.
Episode 3: Jupiter: Destroyer or Savior?
Beneath Jupiter's clouds lie our solar system's deepest secrets: from its violent youth, through the birth of life to the death of the sun. Scientists are discovering that the solar system, the Earth and every living thing exists because of Jupiter.
Episode 2: The End of the Universe
How and when will the Universe end? Gravity and dark matter are poised to annihilate the Universe in a big crunch. Expansion and dark energy may tear it apart. Or, a phase transition could kill us tomorrow in a cosmic death bubble.
Episode 1: Journey from the Center of the Sun
How does light escape from the sun? We take a journey from the centre of the sun, following the path of light. We witness its fiery birth from in the core, its 430,000 mile battle against gravity and magnetism, and its escape from the solar surface.