Except for a very few people who know everything, nobody knows in detail how the universe started or what happened between then and now. But we’ve been given many interesting suggestions. Some, biblical in nature, tell take-it-leave-it stories. Others offer some combination of evidence and logical reasoning.
The Sun was probably formed from the gravitational collapse of a cloud of gas and dust. Early models of star formation assumed spherical symmetry, but if you know the joke whose punchline is “consider a spherical cow”, you should suspect that this is a dangerous oversimplification. Indeed, angular momentum plays a major role. As such a cloud collapses gravitationally, it should form a spinning “accretion disk”.
You can see and hear Eric perform the original version, on Saturday night, February 19, at the Improbable Research show at the AAAS’s Annual Meeting, which this year is in Washington, DC. This show (unlike most of the meeting) is open to the public, free. Spread the word, and come, please!
