New tests could verify general theory of relativity, or find flaws
Compounds with noble gases don’t form naturally on Earth. But in the interstellar medium, they are helping scientists probe the history of the universe.
VIDEO: Our galaxy may seem humble, but here are a few things to know about what makes it an exceptional place
Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.
Several new missions aim squarely at a long-standing astronomical conundrum, with the promise of improving space-weather predictions
Scientists track gas through time and space to better understand how conglomerations of stars are born and die