Stellar collision triggers supernova explosion

The Very Large Array Sky Survey gave astronomers the first clue that ultimately revealed a dramatic story — the remnant of a star that exploded long ago had plunged into the core of its companion star causing it, too, to explode as a supernova.

Wing shape determines how far birds disperse

Bird dispersal movements are thought to depend on complex demographic and genetic factors. Researchers show that there may be a simpler explanation: bird dispersal distances depend on the morphology and flight efficiency of the wings. Bird populations …

Marcia Schvartz Paints Argentina’s Unseen

Schvartz paints an unflinching portrait of the working class, of barrio culture, of women involved in the innocent yet staunchly political act of simply being.