13.8 billion years.
How did we get here?

NASA's Nancy Grace Roman Space Telescope Launches — It lifted off this morning on a SpaceX Falcon Heavy, beginning a three-month journey to L2 — from where it will survey the cosmos 1,000 times faster than Hubble, hunting dark matter, dark energy, and thousands of exoplanets.

In Hilbert Space, All Things Are Quantumly Possible — To truly understand quantum mechanics you have to leave ordinary 3D space behind and enter Hilbert space — an infinite-dimensional arena where the full strangeness of superposition and entanglement finally makes geometric sense.

Theory of Fluids Enters the 21st Century — The equations physicists used to describe fluids have barely changed since the 1800s — until now; a modern insight has allowed researchers to rebuild fluid theory from first principles, with implications for turbulence, cosmology, and beyond.

Neutrinos From Deep Inside Earth Provide a New Picture of the Mantle — A global constellation of detectors is catching geoneutrinos — ghostly particles born from radioactive decay kilometres underground — and using them to map Earth's interior heat engine with unprecedented resolution.

Physicists Solve a Big Quantum Mystery — Then Create a New One — New lattice QCD calculations have seemingly resolved the 25-year-old muon g-2 anomaly, but in doing so they've opened a fresh conflict with precision experimental data — leaving the Standard Model more unsettled than ever.