October 19, 2020
Science News

Why are galaxies different shapes? – Live Science

Look into the night sky and you’ll glimpse the stars from hundreds of billions of galaxies. Some galaxies are swirling blue disks like our own Milky Way, others are red spheres or misshapen, clumpy messes or something in between. Why the different configurations? It turns out that a galaxy’s shape tells us something about the events in that galaxy’s ultra-long life. 
At the very basic level there are two classifications for galaxy shapes: disk and elliptical. A disk galaxy, also called a spiral…

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