That would make it thousands of times more massive than any moon orbiting a solar system plane  — so massive it could make ...

The James Webb Space Telescope has detected clouds made of silicates, similar to sand here on Earth, as well as water, ...

At the beginning of the exoplanet age, the goals were fairly simple. The first was to find as many of them as possible to ...

The hunt for worlds beyond our solar system has shifted from counting planets to confronting extremes that strain basic ...