“I came at exactly the right time… I was 26 years old, and all the monks and priests down here were ready to retire. So I overlapped enough that I got to know them all.” –Allan Sandage As many of you have heard, Allan Sandage passed away last Saturday. Let me tell you a little … Read moreFare thee well, Allan Sandage
“The whole fabric of the space-time continuum is not merely curved, it is in fact totally bent.” –Douglas Adams As many of you know, if you take a whole bunch of mass, and you’ve got nothing going on except gravity, it’s going to gravitationally collapse. And if atoms, nuclei, pressure, and nuclear reactions don’t (or … Read moreThere’s a hole in my spacetime! Or a string, or a wall…
The task is not so much to see what no one yet has seen, but to think what no body yet has thought about that which everyone sees. –Arthur Schopenhauer Most of you who’ve been reading Starts With A Bang for a while have seen this picture come up many, many times. Why do I … Read moreHow do we use the CMB to learn about the Universe?
Dave, one of my online chessplaying buddies, asked me this question (edited for appropriateness): Now this speeding up of the expansion of the universe: Do I understand correctly that one of the theories to explain why relates to “dark matter”? In real simple terms, what in the dark blue blazes is dark matter, and why … Read moreFirst question!