A series of stellar occultations has provided evidence that the ring system around this strange object is evolving drastically.
Salt glaciers on Mercury suggest conditions friendly to life — but not life itself — might once have existed on the innermost planet.
Observers across much of the U.S. and Canada have a unique opportunity Monday night, November 20–21, to see Uranus's brightest moon occult a star.
Jupiter's Great Red Spot may be reaching a milestone this year by shrinking to its smallest size in recorded observational history.
The Lucy mission's flyby of the main-belt asteroid Dinkinesh resulted in a surprise — yet another asteroid moon!
Alien invasion or flares from satellites in multiple orbits? It depends on your point of view. We also check in on Comet Lemmon, poised to possibly reach binocular-visibility.
The Psyche mission launched today, on its way to rendezvous with the asteroid of the same name in 2029.
The Osiris-REX sample collection team reveals the first look at material collected from the asteroid Bennu.
A new understanding of far-off worlds in the outer solar system suggests that if "Planet X" ever existed, it has long since left the vicinity.
Get acquainted with Comet 103P/Hartley. It's been a dozen years since its last bright apparition. While you're at it challenge yourself to spot the elusive gegenschein.
NASA’s newest mission is bound for the metallic asteroid of the same name. The metal-rich rock offers us a view of asteroid interiors.