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A growing catalog of huge but dim galaxies such as Dragonfly 44 is forcing astronomers to invent new theories of galactic evolution.

For Lisa Kaltenegger and her generation of exoplanet astronomers, decades of planning have set the stage for an epochal detection.

Marine bacteria normally seen as single cells join together as a “microscopic snow globe” to consume bulky floating carbohydrates.

Svetlana Jitomirskaya was born in Ukraine, but left the Soviet Union to escape sexism and antisemitism. Even though her work in mathematical physics has now been honored with one of the field’s top prizes, she finds herself still fighting old battles.

Far from being an abstract mathematical curiosity, knot theory has driven many findings in math and beyond.

The discovery of a hot spot for horizontal gene transfer draws attention to the possible roles of parasites and ecology in such changes.

A recent gamma-ray burst known as the BOAT — “brightest of all time” — appears to have produced a high-energy particle that shouldn’t exist. For some, dark matter provides the explanation.

Solve these puzzle questions to level up your Wordle game.

A team of physicists has entangled three photons over a considerable distance, which could lead to more powerful quantum cryptography.