Sunspot2

• by astronomerj

  

  Refer to the picture above.

  What is the white circular spot in the sunspot picture?

  Posted July 10, 2015 7:53 AM

• by drzygn

  actually, i'm kind of confused. there's this toggle button which changes inverts the colours. so i think they're all umbras?

  Posted July 22, 2015 1:41 PM