Planetary Shields Explained
Synopsis
Eight astronauts with over 1,000 days in space discuss how Earth's shields protect life from the sun's harmful radiation.
Synopsis
Will Smith introduces eight astronauts in "Planetary Shields Explained," part of the series "One Strange Rock." They discuss Earth's defenses against the sun's harmful radiation. Jeff Hoffman shares insights from his time in space, noting the sun's destructive potential. The episode illustrates how Earth's core, atmosphere, and other systems protect life from cosmic threats. Produced by Darren Aronofsky and Jane Root, it runs for 47 minutes and aired in 2025.
Deep Dive
Why Watch
- Meet astronauts who experienced the sun's power firsthand.
- Find out how Earth's core protects us from solar radiation.
- See the sun as a star in the black sky of space.
Did You Know
- Eight astronauts featured in the film have over 1,000 days of experience in space.
- The temperature in direct sunlight can reach 250 degrees, while in the shade it drops to minus 250 degrees.
- The sun emits cosmic radiation that, without Earth's protection, would prevent life from existing on the surface.
- The film suggests that if Earth's protective systems were not in place, life as we know it would not be possible.
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Frequently Asked Questions
What is the temperature difference between the sun and shade in space?
The temperature extremes are 250 degrees in the sun and minus 250 in the shade.
How many days of experience do the astronauts have in space?
The eight astronauts have over 1,000 days in space between them.
What does the Earth's core do for life on the surface?
The Earth's core, along with other planetary systems, provides protection that allows life to thrive on the surface.
What are people saying?
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