Solar System Chatter

New Moons for Uranus?

NASA/Erich Karkoschka (Univ. Arizona)
NASA/Erich Karkoschka (Univ. Arizona)
Voyager 2 is the mission that keeps on giving. Scientists at the University of Idaho think they’ve discovered two moons orbiting Uranus that have never been seen before. They noticed patterns in the waves of the planet’s rings that indicate an object creating a disruption. The two moons, which haven’t been observed yet, only hypothesized from the math, would be tiny: two to nine miles in diameter. Scientists have always wondered why Uranus’ thin ring structure doesn’t spread out more, and already know that two of the planet’s 27 known moons act as “shepherds” to the Epsilon ring. If these two new moons exist, they may help add to the explanation of the planet’s dynamics if they act as shepherds to other parts of the ring system.

Heather Goss is the Departments Editor at Air & Space.

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moons, Uranus, Voyager