Starship Asterisk*

The dust grains are about the same size as the wavelength of the blue light. That means that when "a blue photon" intercepts a dust grain, it is very likely to "have its path blocked by the dust grain" and be scattered away by it. Imagine running full force into an obstacle. You...

Can someone explain "Interstellar dust clouds reflecting the light of the nearby stars, the nebulae usually appear blue because scattering by the dust grains is more effective at shorter (bluer) wavelengths." I must be misreading this. It sounds like the bluer wavelengths are causing the d...