NASA's Solar Dynamics Observatory (SDO) is on a mission to study our sun and how its activity might affect Earth. We've heard about solar flares and the way solar activity can disrupt life on Earth, but have you ever just looked at a sunspot?
The sunspot visible in the upper left of the image above is called AR1339, and it's one of the largest sunspots recorded in years. So large, in fact, that it's visible through backyard solar telescopes. Spaceweather.com reports that the sunspot measures roughly 40,000 km wide and twice that length, noting that some of the sunspot's darker cores are wider than our planet.
If you don't have a telescope handy and still want to take a look at our stunning sun, check out SDO's website. It makes its data available to the public through a searchable database.