Night - Fifty two - The Owl Nebula (M 97
The Owl Nebula (also known as Messier 97, M97) is a planetary nebula approximately 2,030 light years away in the constellation Ursa Major. Estimated to be about 8,000 years old, it is approximately circular in cross-section with a faint internal structure. Planetary nebulae have nothing to do with planets. They simply appeared kinda like planets in telescopes long ago, their glowing disks suggesting a name that linked them to actual planetary disks. The summer sky is filled with planetary nebulae, and these objects give us a look at our solar system’s future. Some 6 billion years from now our Sun will transform into a white dwarf star and a planetary nebulae envelope, long after life on Earth is gone. The Owl Nebula, lying in our sky below the bowl of the Big Dipper, is a great example. Catalogued as Messier 97, the Owl is a bright planetary named for its two dark “eyes,” and it consists of three distinct shells. The asymmetry of the inner shell, with a barrel-like structure tipped...