Intergalactic Collisions Created Milky Way’s Spiral Arms

The Milky Way’s spiral arms formed due to two intergalactic crashes with the nearby dwarf elliptical galaxy Sagittarius over the last two billion years and a third collision is due
Epoch Times Staff
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<a><img src="https://www.theepochtimes.com/assets/uploads/2015/09/milkywayspiralarms.jpg" alt="Artist's concept of the Milky Way showing the two major arms (Scutum-Centaurus and Perseus) attached to the ends of a thick central bar, where a third shorter spiral arm lies, the 'Far-3 kiloparsec arm.' The two less distinct minor arms (Norma and Sagittarius) are located between the major arms, and are mostly filled with gas and pockets of star formation. (NASA/JPL-Caltech)" title="Artist's concept of the Milky Way showing the two major arms (Scutum-Centaurus and Perseus) attached to the ends of a thick central bar, where a third shorter spiral arm lies, the 'Far-3 kiloparsec arm.' The two less distinct minor arms (Norma and Sagittarius) are located between the major arms, and are mostly filled with gas and pockets of star formation. (NASA/JPL-Caltech)" width="590" class="size-medium wp-image-1795212"/></a>
Artist's concept of the Milky Way showing the two major arms (Scutum-Centaurus and Perseus) attached to the ends of a thick central bar, where a third shorter spiral arm lies, the 'Far-3 kiloparsec arm.' The two less distinct minor arms (Norma and Sagittarius) are located between the major arms, and are mostly filled with gas and pockets of star formation. (NASA/JPL-Caltech)
Epoch Times Staff
Epoch Times Staff
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