The celebrated plumes of Saturn’s moon Enceladus could come from pockets of watery mush in the moon’s icy shell, simulations suggest.
This year, a bevy of new missions got under way on Mars and spacecraft prepared to visit asteroids.
NASA’s Parker Solar Probe crossed a boundary between the sun’s atmosphere and interplanetary space that has been predicted for decades but never observed.
A bright, mysterious blast of extragalactic light appears to have spawned a small, compact object.
NASA’s Ingenuity craft was originally planned to operate only 30 Martian days.
A newly discovered exoplanet that whips around its star in less than eight hours is smaller than Earth, as dense as iron and hot enough to melt.