Related: Saturn's 'Death Star' moon ... has cast new light on a process that may have created these vast subsurface seas known as tidal heating. This occurs when a body like a moon is distorted ...

Its most prominent impact crater, Herschel, stretches across a third of its face, giving it the nickname Death Star in homage to the Empire’s gigantic space station in Star Wars. The moon is so ...

Northern lights over a winter landscape or polar lights in the starry sky with aurora swirling. A 27%-lit waxing crescent moon will be visible ... the brightest star in the constellation of ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...