Artist's illustration showing a distant star going out of sight as it is eclipsed by Uranus — an event known as a planetary stellar occultation. | Credit: NASA/Advanced Concepts Laboratory NASA ...

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A day on Uranus just got slightly longer, thanks to more accurate measurements of its rotation period that should help scientists plan missions to probe the gas giant. Figuring out the rotation ...

Planetary scientists have pinpointed the rotation period of Uranus — and it’s 28 seconds longer than they thought it was 1. Like other gas-giant planets, Uranus doesn’t have a rocky surface ...