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| Super Weeble |
The Earth spins around once every 24 hours on its axis, creating the continuous cycle of day and night. But this rotation isn't as straightforward as it sounds: Forces large and small cause the Earth to wobble as it spins. This wobbling can pose a problem for navigation systems like GPS.
Scientists working with lasers and mirrors are refining a new system to track the Earth's rotation and its kinks.
Scientists working with lasers and mirrors are refining a new system to track the Earth's rotation and its kinks.
Space.com: Lasers Measure Earth's Rotation and Wobble
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