In response to a question from the public…
Why Are Galaxies Disks?
Not all galaxies are disks, but many are. The reasons have to do with their formation history and a few basic physical laws.
This is where you’ll find our thoughts about recent (and not) astronomy, earth science and other science news, our answers to questions we get from people a lot, plus whatever else strikes our fancy. Sometimes we get into a few of the mathematical or scientific details, but never too deeply.
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