Other Earths: The Search for Habitable Planets

Our galaxy is made up of some four hundred billion stars and at least a hundred billion planets. How many are like Earth, with an atmosphere, flowing water, complex geology, and abundant life? Astronomers are seeking answers in countless photons racing past the Earth and in bold new theories about how planets form and evolve.

Courtesy of Documentary on YouTube. Watch on YouTube ↗

More Space & Cosmos Documentaries

Life Beyond II: The Museum of Alien Life (4K)2020•38m•4K•★9.2Life Beyond: Visions of Alien Life (4K)2024•1h 48m•4K•★9.1Death of the Universe (4K)2019•29m•4K•★9Shouting at Stars: A History of Interstellar Messages2022•32m•HD•★8.8NASA's Most Groundbreaking Accomplishments2024•1h 44m•HD•★8.0Pacific Ring of Fire: Inside the Planet's Most Active Volcanic Zone2026•1h 45m•HD•★8.0NASA's Mariner Missions [4K]2025•3h 59m•4K•★7.8What if a star explodes near Earth?2022•19m•4K•★7.7The Increasing Reality of War in Space2024•28m•HD•★7.7How Astronauts Live in Space | Spacetime | Free Documentary Space2025•51m•HD•★7.7Pluto and Beyond2024•53m•HD•★7.6What's Pushing the Universe Apart?2025•52m•HD•★8.1