<
http://www.forbes.com/sites/startswithabang/2015/12/12/ask-ethan-why-arent-spiral-galaxies-more-wound-up/>
"You can look at any number of spiral galaxies, but they all have the
same apparent structure in common."
An interesting explanation of spiral galaxies.
Share and enjoy,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://www.xanadu.com.au/ Chief Scientist, Xanadu
http://www.glasswings.com.au/ Partner, Glass Wings
http://www.sericyb.com.au/ Manager, Serious Cybernetics