This image shows a combination of visible light imagery of the Hubble Space telescope and infrared data from the Spitzer space telescope of M51, aka the Whirlpool galaxy. The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting grand-design spiral galaxy that is estimated to be 23 ± 4 million …
Jets are an active, short-lived phase of star formation, lasting only about 100 000 years. They are called Herbig-Haro (HH) objects, named after George Herbig and Guillermo Haro, who studied the outflows in the 1950’s. Astronomers still don’t know what role jets play in the star formation process or exactly how the star unleashes them. …
Here is a comparison image of the sun in H-alpha from 13/01/2013 and 14/01/2013. The rotation of the sun can clearly be seen.
Today there was a nice sun after a period of 2 months of clouds. AR1654 gave a nice sight and the sun showed quite some activity.