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Website title: Triton Station – A Blog About the Science and Sociology of Cosmology and Dark Matter
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There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy.
– Hamlet
One of the great privileges of astronomy is that there’s always something new and surprising to discover. It’s a big universe. There’s a lot in it.
In appreciation of this simple joy, I thought I’d share a nifty discovery made b...
The stability of spiral galaxies was a foundational motivation to invoke dark matter: a thin disk of self-gravitating stars is unstable unless embedded in a dark matter halo. Modified dynamics can also
If a title is posed as a question, the answer is usually
No.
There has been a little bit of noise that dark matter might have been detected near the center of the Milky Way. The chatter seems to have died down quickly, for, as usual, this claim is greatly exaggerated. Indeed, the
The mass distribution of dark matter halos that we infer from observations tells us where the dark matter needs to be now. This differs form the mass distribution it had to start, as it gets altered by the process of galaxy formation. It is the primordial distribution that dark matter-only simulations predict most robustly. We* reverse-engineer the collapse of the baryons tha...
I have always been interested in the extremes of galaxy properties, especially to low surface brightness (LSB). LSB galaxies are hard to find