Galactic rotation curves stay flat, $v(r) \approx \text{const}$, far beyond the visible mass, and gravitational lensing plus the CMB power spectrum all point to roughly five times more non-luminous…
Muonic-hydrogen spectroscopy measured a proton charge radius several standard deviations smaller than the older electron-scattering and hydrogen-spectroscopy values. Is the…
Unitary evolution keeps a system in superpositions, … yet a measurement yields a single definite outcome $|a_k\rangle$ with probability $|c_k|^2$. What physical process — if any — selects a…
The observed baryon-to-photon ratio is … yet the Big Bang should have produced equal matter and antimatter. The Standard Model satisfies Sakharov's three conditions only far too…