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M74: The Perfect Spiral - Nautilus (APOD 01 Dec 2007)

Posted: Sat Dec 01, 2007 3:18 pm
by brbear1
This is a breathtaking picture. As I studied it, I was reminded of the appearance of a cephalopod, the nautilus. On Wikipedia, there is a detailed description of a nautilus and also various pictures of the same. What is especially interesting is the spiral-shaped nature of the nautilus' shell and how it's brown and white striping is reminiscent of the white star bands interspersed with the dark dust lanes in the spiral galaxy, M74.

Posted: Sat Dec 01, 2007 8:32 pm
by goredsox
On the high magnification view, there is a definite cellular structure to the dust lanes.