On "Game of Thrones," no one knows when summer will end and winter will begin. So the spin axis orientation makes all the difference."Īlthough Uranus' winter and summer might be extremely long, they are still predictable. "If you lived anywhere in the northern hemisphere, summer would last 42 years and then winter would last 42 years. " The planet Uranus in our solar system has its North Pole spin axis pointed toward the sun during some 42 years, and then it points away from the Sun for another 42 years," wrote Marcy. Other planets experience similar - and more extreme - seasonal changes.
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