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Apr13B - Outer spiral arms are bluer in color Pink spots...

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GALAXIES LIKE OUR MILKY WAY Andromeda Galaxy (M31) : Spiral Two smaller galaxies orbiting Central region dominated by old red stars Outer spiral arms dominated by young blue stars Southern Pinwheel (M83) : Spiral, but note a bit of a bar in center Central region is redder in color
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Unformatted text preview: Outer spiral arms are bluer in color Pink spots are big star forming regions Like Orion Nebula Blue light from massive stars Red light from hydrogen gas Red+Blue ! Pink TYPES OF GALAXIES BARRED SPIRAL IRREGULAR ELLIPTICAL SPIRAL...
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