Planetary Defenders

How would humanity respond if we discovered an asteroid headed for Earth? NASA’s "Planetary Defenders" is a gripping documentary that delves into the high-stakes world of asteroid detection and planetary defense. Journey alongside a dedicated team of astronomers and scientists working tirelessly to track and monitor near-Earth asteroids, aiming to protect our planet from potential impacts.

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•★8.8Universe: Beyond the Millennium - Planets1999•50m•HD•★8.0Why Won't Nasa's Parker Solar Space Probe Melt Around the Sun2023•47m•HD•★8.0Project Gemini: The Most Dangerous Space Program You've Never Heard of2025•52m•HD•★8.0Rise of the Rockets (2019) | Full Documentary | NOVA2019•53m•HD•★7.9Do Colliding Pulsars Create All of the Universe's Gold? | Cosmic Queries #1122026•50m•HD•★7.8Artemis II: Return to the Moon | BBC News2026•27m•HD•★7.7Interview: Dark Matter and Black Holes with David Kaiser | Particles of Thought2026•1h 24m•HD•★7.7How SpaceX Could Win The Space Race | CNBC Marathon2022•58m•HD•★7.7