Sub-Neptunes may be inhospitable to life as we know it, but their strange water-rich interiors hold secrets ... where is the ...

The Sun has a radius 109 times the size of Earth’s – this size difference means that an Earth-like planet orbiting a white dwarf could be about the same size as the star itself. White dwarfs are ...

New models suggest that Ceres, the asteroid belt's largest object, once had a radioactive core that could have sustained life ...