The above image is shows the latest Supernova to go off. This violent explosion took place in the Whirlpool galaxy, also known as M51. This galaxy is near the big dipper and was one of the first galaxies I found when I got my first telescope and it is one I love to look at. Do to its low surface brightness it can tell you what your viewing conditions are that night. Good conditions mean higher contrast and greater detail. Takes a little practise, but is useful info.
The supernova is designated SN 2011dh
by now this object is no longer visible, but to professional observatories with large telescopes.