New High-Res Images of The Sun Show How Creepy Sunspots Look in Closeup – ScienceAlert

One of the most powerful solar observatories in the world has just completed a major upgrade. And now, the GREGOR solar telescope in Spain has taken some of the most high-resolution images of our Sun ever obtained in Europe.
In the upgraded telescope’s new images, details as small as 50 kilometres (31 miles) across can be discerned amid the roiling activity on the surface of the Sun.
“This was a very exciting, but also extremely challenging project,” said physicist and GREGOR lead scientist Lu…

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