Sizes of Stars and Sub-Stellar Objects: From Brown Dwarf to Red Hypergiant

We've learned about the stellar life cycle, so we know what happens to smaller stars like ours, and we know what happens to larger stars that become neutron stars and black holes. But what are the limits on either side? How small can a star be, and how big can a star be? What is the smallest star we can see, and what is the biggest? Do these limits even exist? Let's take a look!

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