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What's the origin of water on Earth? episode artwork

EPISODE · May 14, 2025 · 14 MIN

What's the origin of water on Earth?

from Oxford Sparks Big Questions · host Oxford Sparks

With more than 70% of its surface covered in water, Earth is rightly known as the "blue planet". But where did this water - so essential to life - originate? While some theories suggest that hydrogen was delivered to Earth from space via asteroids, new research indicates that the building blocks for water may have been present on our planet all along. We chat to Tom Barrett from Oxford's Department of Earth Sciences to find out more.    

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What's the origin of water on Earth?

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How long is this episode of Oxford Sparks Big Questions?

This episode is 14 minutes long.

When was this Oxford Sparks Big Questions episode published?

This episode was published on May 14, 2025.

What is this episode about?

With more than 70% of its surface covered in water, Earth is rightly known as the "blue planet". But where did this water - so essential to life - originate? While some theories suggest that hydrogen was delivered to Earth from space via asteroids,...

Can I download this Oxford Sparks Big Questions episode?

Yes, you can download this episode by clicking the download button on the episode player, or subscribe to the podcast in your preferred podcast app for automatic downloads.
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