A quick note to put the acceleration discrepancy in perspective. The acceleration discrepancy, as Bekenstein called it, more commonly called the missing mass or dark matter problem, is the deviatio…
Stacy McGaughMusings over 25 orders of magnitude in acceleration, from the surface of a neutron star on the brink of collapse to the outer fringes of the most diffuse galaxies. Spoiler: the mass discrepancy only appears at one end of the spectrum.
Carnegie geochemist Erik Hauri, whose work upended our understanding of the Moon’s formation and the importance of water in Earth’s interior, died Wednesday in North Potomac, MD, following a battle with cancer. He was 52.
Stacy McGaughNew note on the arxiv. Knowing the absolute distance the center of the Galaxy from the periastron passage of S2 also nails down the rotation curve. Combined with the RAR, we further get the distribution of stellar mass and that of the implied dark matter.
A fight over the very nature of the universe has turned ugly on social media and in the popular science press, complete with accusations of “cheating” and ad hominem attacks on Twitter. Most of the universe is hiding, and some scientists disagree ...