NASAのインスタグラム(nasa) - 10月22日 02時46分

Seriously-Voyager 2 flew by Uranus 30 years ago, and researchers are still making discoveries from the data gathered then. A new study led by University of Idaho researchers suggests that Uranus has two tiny moons orbiting near two of its rings. They found the pattern in Uranus' rings was similar to moon-related structures in Saturn's rings called moonlet wakes. The researchers estimate the hypothesized moonlets in Uranus' rings would be 2 to 9 miles (4 to 14 kilometers) in diameter -- as small as some identified moons of Saturn, but smaller than any of Uranus' known moons. Uranian moons are especially hard to spot because their surfaces are covered in dark material.

Uranus is seen in this false-color view from our Hubble Space Telescope from August 2003. The brightness of the planet's faint rings and dark moons has been enhanced for visibility.

Credits: NASA/Erich Karkoschka (Univ. Arizona)

#nasa #space #planets #nasabeyond #astronomy #uranus #uidaho #moon #voyager #hst #hubble #moonlet #science

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