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Ask Ethan #7: How to End the World

“If you are writing any book about the end of the world, what you are really writing about is what’s worth saving about it.” -Justin Cronin Well, it’s Friday again, and that means it’s time to dip into the question/suggestion box, and see what you’ve come up with for me. This week’s Ask Ethan comes…

Why are Brown Dwarfs so Dim?

Ahh, stars. Giant furnaces of nuclear fusion. Doing the stuff our Sun does, burning hydrogen fuel into helium (among other things) and emitting lots of visible light and energy in the process. But when we take a look at brown dwarfs, they aren’t like normal (i.e., main sequence) stars like our Sun. Instead of burning…

Galaxies are made exactly how, now?

Last week, Jamie (my significant other) came home from work and told me about a conversation she had with her coworker, Chris. This week she asked another one, Miguel, whether he had any questions about Astronomy, Physics, space, etc. This week’s question comes from Miguel: What is a galaxy, anyway? Why does it look like…