... A Floral Aurora Corona . ... Matter falling in from a bar of stars and gas across the center is likely being heated by an extremely energetic region surrounding the central black hole. The Big Corona . ... Seeing the corona first-hand during a total solar eclipse is best. ... The daytime sky grew dark, the temperature dropped, and lights came on as Chongqing, China, was plunged into the Moon's shadow during the July 22nd total solar eclipse. ... The Lagoon Nebula in Gas, Dust, and Stars . ...