Astronomers have, for the first time, pinned down both the mass and distance of a planet that drifts through the galaxy ...

Not all planets are lucky enough to live in a neighborhood like our Solar System – some are doomed to roam the cosmos alone.

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

Determining the size of an Earth-size exoplanet by the amount of starlight it blocks hundreds of light-years away once was the realm of science fiction. Measuring the mass of such a small planet based ...

In science, there are thousands of ways to measure the world around us that the average person may never encounter. For example: Pascals to measure pressure, Candles to measure light intensity, and ...