(via Science Asylum) Believe it not, Einstein originally thought the universe was static. It would take Alexander Friedmann to correct him. Here are the Friedmann equations, explained simply.

I'm studying for my Qual (12 days to go and counting), and currently slogging through cosmology. Something that was never explained to my satisfaction earlier is how inflation resolves the fine tuning ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...