Uranus changes brightness tagged posts

How the Sun’s influence on Uranus Changes its Brightness in the sky

How the sun’s influence on the remote planet Uranus changes its brightness in the sky

K. L. Aplin et al. Solar-Driven Variation in the Atmosphere of Uranus, Geophysical Research Letters (2017). DOI: 10.1002/2017GL075374

Changes in solar activity influence the color and formation of clouds around the planet, researchers at Oxford and Reading universities found. The icy planet is second furthest from the sun in the solar system and takes 84 Earth years to complete a full orbit – one Uranian year. The researchers found that, once the planet’s long and strange seasons are taken into account, it appears brighter and dimmer over a cycle of 11 years. This is the regular cycle of solar activity which also affects sun spots.

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