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Ep. 15: Listener Questions Answered
We finally get organized enough deal with several listener questions: isn\xe2\ufffd\ufffdt dark matter just regular stuff we can\xe2\ufffd\ufffdt see? how can parts of the Universe be expanding faster than the speed of light? what will Betelgeuse look like when it explodes as a supernova? what\xe2\ufffd\ufffds the speed of gravity? All these and more questions are answered.