A rare “ultra-hot Neptune” has revealed startling details, from near-2,000°C surface temperatures to unexpected reflective ...

If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

The study also suggests a similar makeup for Neptune. In essence, then, the surface of both planets are 5,000 mile-deep oceans, though it is a little more complicated than that. The Oceans Of ...