Ask Ethan #37: The Earth’s Motion Through The Galaxy

It’s all relative, but what you might have seen probably isn’t accurate.

Ethan Siegel
Starts With A Bang!
7 min readMay 17, 2014

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“There is no such thing as perpetual tranquillity of mind while we live here; because life itself is but motion, and can never be without desire, nor without fear, no more than without sense.” -Thomas Hobbes

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Ethan Siegel
Starts With A Bang!

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.