Uranus Events - Eclipse and Dark Spot
eclipse of one of the planet’s moons and the appearance of a dark spot.
Sromovsky and his team observed Ariel, one of Uranus’ moons, as it traveled between the planet and the Sun creating a shadow that scooted across the planet’s surface. This is first time an eclipse has been spotted on Uranus because the planet takes 84 years to orbit the sun and the planet is sideways with respect to its polar axis.
The team also noticed a dark spot in Uranus’ atmosphere. Frequently seen on Neptune, a planet that is similar in size and atmospheric composition, this is the first definitive image of a dark spot on Uranus. Sromovsky says that the spot likely indicates cloud circulation forming a vortex with characteristics similar to hurricanes on Earth.