Earth isn't the only planet with seasons, but they can look wildly different on other worlds 

 Why does Earth have regular seasons when other planets don't? 

https://cdn.mos.cms.futurecdn.net/nDbA6uYe6tyb2bHp9ju4ii.jpg

https://www.space.com/earth-isnt-only-planet-with-seasons-wildly-different-on-other-worlds