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quote:Originally posted by Roy PImagine travelling in a spaceship towards a spiral galaxy similar to our own Milky Way. You eventually get close enough that it fills the window of the spacecraft you're looking though. Based on views we currently have of these galaxies, one would think the view would be quite blinding.Now go closer and closer until you reach a position similar to the position we occupy in the Milky Way galaxy. Will the sky be as black as the sky here on Earth?If so, why? Why is it that the closer you get to a galaxy the dimmer it becomes? It certainly seems that way if our galaxy *is* the same as those we see in the sky from here on Earth.
quote:Originally posted by another_someoneI think you missed my point.
quote:Originally posted by Roy PTake away the Sun and replace it with a galaxy occupying approximately the same degree of sky as the Sun now occupies. Would you consider it to be, say, half as bright as a full moon?
quote:Now, double the size of the galaxy (Bring it closer). Common sense tells me the 'object' would gain in radiance.
quote:Originally posted by another_someoneLet me give you a crude example.