Your February 2025 Issue of Physics Today Is Now Available

Physics Today, the flagship publication of the American Institute of Physics (AIP), is the most influential and closely followed physics magazine in the world. With authoritative features, full news coverage and analysis, and fresh perspectives on technological advances and groundbreaking research, Physics Today informs readers about science and its role in society. Members of the AAS, an AIP Member Society, automatically receive free print and online subscriptions to the magazine. Physics Today Online, the magazine’s internet home, presents an enhanced digital edition and provides a valuable online archive.

Highlights from the February 2025 Issue

Early Debates in Space Science
Does the Sun generate a wind or a breeze? Where do gamma-ray bursts originate? Here’s how five of the biggest questions in the field were answered with the help of satellites. — W. David Cummings and Louis J. Lanzerotti

The Lessons Learned from Ephemeral Nuclei
Recent experimental analyses of fleeting clusters of protons and neutrons put the very notion of the atomic nucleus in a new light. — Witold Nazarewicz and Lee G. Sobotka

Frank Kameny the Astronomer
The famed gay rights leader and accomplished scientist was one of thousands of US government employees who lost their livelihoods during the Lavender Scare. — Kai Hostetter-Habib

Vast Amounts of Hydrogen Are Likely Hidden under our Feet
Enough of the gas is trapped beneath our planet’s surface to satisfy our energy needs for decades, a new study finds. The question is whether it’s economically viable to use. — Sarah Wild

Gauge Invariance Applies to Statistical Mechanics Too
Mathematical tools from the abstract world of quantum fields have surprising relevance to the seemingly more concrete realm of particles in boxes. — Johanna L. Miller

See the Complete Table of Contents