Ever gazed up at the stars and felt that magical awe wash over you? As cities grow brighter, it's becoming harder to ...

A stunning new discovery reveals that white dwarf stars — once thought to explode in predictable ways — actually detonate through an astonishing variety of mechanisms. From star cannibalism to violent ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...