Earlier this year, a team of astronomers discovered a new moon of Uranus that is minuscule, with a diameter of about 10km.

There are several frozen moons in our solar system, orbiting the gas giants. Some of them, despite having temperatures that would make Antarctica feel tropical, have liquid water under the surface.

Simulations show that subsurface oceans on small moons may hit boiling conditions, potentially creating features like Miranda’s distinctive ridges.

"Asteroseismology with Roman is possible because we don't need to ask the telescope to do anything it wasn't already planning to do." ...

If any giant planets orbited Eta Cassiopeiae A within about 8 AU, astronomers could spot their telltale signature in the spectrum of light from the star. And since no planets at all can survive the ...