They don't assign colors based on wavelength, but on chemical composition. *nitr...

		wkdown on Sept 10, 2009 \| parent \| context \| favorite \| on: Space Doesn't Really Look Like That They don't assign colors based on wavelength, but on chemical composition. nitrogen (red), hydrogen (green), oxygen (blue), and helium (violet). (via Hubblesite)[http://www.hubblesite.org/newscenter/archive/releases/2000/0...]