From PBS Terra.

At a rocket test range in Alaska, scientists are firing rockets into the northern lights. They want to better understand the aurora because they are the visible fingerprint of a powerful and dangerous force that can disrupt GPS, satellites, and power grids. We join them at a launch to find out what they’ve discovered.

Hosted by Joe Hanson from Be Smart, Overview uses stunning aerial and nature footage to reveal the hidden wonders that shape our planet.

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