December 2024

Spectral energy distribution fits for the pre-white dwarfs. Black dots correspond to observed photometry, and the red lines are the best-fit models …

This Weekend: Catch the Quadrantids at their annual peak, Earth at perihelion and the Moon blotting out Saturn. An early Quadrantid meteor …

Time until land plant extinction (Gyr) vs. CO2 outgassing rate relative to modern for varying weathering parameters. Credit: The Planetary Science Journal …

Feynman diagrams [(a) loop-after-loop, (b) overlapping, (c) nested] representing the two-loop electron self-energy. The double line denotes the electron in the presence …

Sometimes, it’s hard to remember that Earth is constantly being bombarded by literally tons of space debris daily. The larger bits form …

General view of the Zaghermarz shipwreck. a the shipwreck partially covered by the sand dune; b preparation of the sandbag to shield …

Distribution of L[C ii]/LCO(1−0) from S. C. Madden et al. (2020) PDR model sets (Z = 0.05 − 1 Z⊙, G0 = …

When our Sun dies, it will turn into a white dwarf. They are a common aspect of stellar evolution and a team …

Stars come in all manner of sizes and temperatures. Many of the massive ones are nearing the end of their lives and …

Gaze up at the Moon on any night and you will see a barren world displaying all manner of shades of grey. …