While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...

It’s the greatest cosmic murder mystery of the year: How did a black hole destroy a star—and what kind of black hole is the culprit? Normally, so-called “gamma ray bursts,” sudden flashes of extremely ...