Webb Telescope Reveals Worlds in the Farthest Reaches of the Solar System
James Webb Space Telescope data on distant worlds confirm some solar system formation hypotheses and confuse others.
Explore the Night with Bob King
Is Betelgeuse Fading Again?
Betelgeuse has dipped nearly half a magnitude since late January. Could it be headed for another Great Dimming Event? We also take a look at this spring's "other" eclipse.
Icy Impactor Might Explain the Formation of Mars’s Moons
In a new study, scientists suggest an impact with a giant icy object could explain the formation of Mars's moons, Phobos and Deimos.
Astronomers Find New Moons of Uranus and Neptune
The three new moons for Uranus and Neptune are each part of a "family," groupings that fragmented from a single parent object.
NASA's DART Impact Reshaped the Asteroid Dimorphos
Models of the NASA's DART impact reshaping the asteroid moon Dimorphos show that this object is "rubble all the way down."
Webb Telescope Spies Hints That Solar System's Outskirts Are a Hotbed of Activity
The James Webb Space Telescope has found that distant dwarf planets might be methane factories.
How Venus Ended Up with a Mini-Moon Named Zoozve
A quasi-satellite of Venus has just received an unusual name.
Does Saturn's "Death Star" Moon Harbor an Ocean?
New evidence, based off of NASA's Cassini measurements of Mimas's orbit, suggests the icy "Death Star" moon might have a subsurface ocean.
Astronomy in Space with David Dickinson
NASA's Juno Mission Makes Closest Flyby Past Io
Juno has revealed Jupiter's volcanic moon Io as never before.
Explore the Night with Bob King
The Best Comets to Look for in 2024
If you like chasing comets, here's a guide to the year's best and brightest.
Asteroid 2024 BX1: From a Light in the Sky to Rocks on the Ground
The asteroid 2024 BX1 went from a moving dot of light to rocks on the ground in mere hours — and amateur astronomers were critical to both discovery and recovery.
Methane Icebergs Could Float in Titan’s Seas
The “magic islands” that appear and disappear in Titan’s methane-ethane seas could be hydrocarbon icebergs, a new study finds.
The Webb Telescope's Grand Tour of the Solar System
The James Webb Space Telescope has revealed galaxies in the early universe, hidden star formation, and sniffed the atmospheres of exoplanets. But it's also exploring closer to home, imaging each of the giant planets in detail. The telescope can see aspects of the planets' compositions in ways that passing satellites…
As an Asteroid-Hunting Mission Approaches Its End, What's Next?
The pioneering NEOWISE observatory celebrates a milestone, even as the end of the mission draws near.
Explore the Night with Bob King
Vesta Sets Sail Across Orion
Look who's visiting this winter in Orion: Vesta, a bright asteroid with a dark side.
Explore the Night with Bob King
Get Ready to Greet the Geminid Meteor Shower!
The year's most spectacular meteor shower is upon us. Prepare to enjoy the Geminids under a dark, moonless sky, when you might see more than 100 meteors per hour.
Buried Polygons on Mars Point to “Stark Environmental Transition”
Polygons buried beneath the surface of Mars indicate an abrupt transition in the planet's early history.
The Comet-Asteroid Chiron Has Rings — And They're Changing
A series of stellar occultations has provided evidence that the ring system around this strange object is evolving drastically.
Do Glaciers on Mercury Suggest Such a Planet Could Be Habitable?
Salt glaciers on Mercury suggest conditions friendly to life — but not life itself — might once have existed on the innermost planet.
Amateur Astronomers Discover an Asteroid’s Moon
The small object orbiting around main-belt asteroid 5457 Queen’s is the second confirmed asteroid moon discovered during a stellar occultation.