A solar flare and coronal mass ejection from the sun this week will lead to a northern lights show Saturday, but we're overdue for a more powerful blast.
A prototype of the spacecraft it wants to send to Mars could be started up for the first time as soon as Thursday.
NASA's Osiris-Rex spacecraft and Japanese counterpart Hayabusa2 reveal interesting findings from two near-Earth asteroids.
Scientists have new evidence of an ancient sense of geomagnetism that we know little about.
Scientists call it a "perigee syzygy," writers like to call it a "supermoon," but the rest of us just call it an awesome sight.
Most asteroids making close flybys are small and hard to spot, but this month a big one is just sauntering by.