SUNSET: 
‘Oumuamua "Sped Up" in the Inner Solar System. This Might Be Why.
Astronomers think a jet-powered rocking motion could solve the puzzle.
The Black Hole Files with Camille Carlisle
Piercing the Veil of Our Black Hole
Astronomers have overcome the interference of clumpy interstellar gas to catch a glimpse of the gas around the Milky Way’s central black hole.
Saturn Hasn’t Always Had Rings
Analyses of data from Cassini’s final days suggest the rings are a late addition and use them to solve a Saturnian mystery.
We Don’t Really Know When the Sun Rises
Hundreds of sunrise and sunset times reveal that there’s something amiss with our calculations.
The Black Hole Files with Camille Carlisle
Astronomers Use Annihilated Star to Clock Black Hole’s Spin
The glow of a star torn up by a supermassive black hole has enabled researchers to measure how fast the black hole whirls around.
Rotating Gas in a Quasar’s Heart
Astronomers have “imaged” gas as it orbits a supermassive black hole some 2 billion light-years away.
The Black Hole Files with Camille Carlisle
What LIGO Teaches Us About Black Holes
The rising count of gravitational-wave events is giving us a new look at a once-invisible population of black holes.
Gas Seen Moving Near the Event Horizon
Astronomers have detected three flares from near our galaxy’s central black hole that look like gas closely orbiting the unseen object.
Odd Jets Might Signal Dual Black Holes
Off-kilter, curved, and otherwise unusual beams of plasma from galaxies’ cores might track the dueling dances of two supermassive black holes.
Ancient Merger Wreckage in the Milky Way
Mounting evidence indicates that our galaxy smashed up another smaller galaxy roughly 10 billion years ago.
Source for Europa Geysers Missing
A new look at old data suggests there’s something missing from suspected plumes on Europa: a heat source.
The Black Hole Files with Camille Carlisle
Video: The Glow of Spiraling Black Holes
New calculations reveal what two supermassive black holes about to merge would look like in ultraviolet and X-rays.
Jupiter’s Magnetic Field Has Weird Structure
Juno observations reveal that Jupiter’s magnetic field has a wacky plume.
The Black Hole Files with Camille Carlisle
Star Swings Around Black Hole, Tests Gravity
Astronomers have seen a star’s light redden as it passed our galaxy’s central black hole, just as general relativity predicts.
The Black Hole Files with Camille Carlisle
Black Hole Destroys Star and Shoots Jet
Astronomers have watched the growth of a jet fueled by a shredded star.
The Black Hole Files with Camille Carlisle
Science Fiction Wormholes Don’t Exist
Hoping for faster-than-light travel? Wormholes aren't the paths you're looking for.
Methane and Other Organics on Mars
The Curiosity rover has detected organic molecules in ancient rocks on Mars.
More Mystery Objects in the Galactic Center
Astronomers have discovered three more red, dusty objects near the Milky Way’s central black hole that could be merged stars.
Dunes on Pluto
Planetary scientists think they’ve found wind-built ripples of methane ice on the king of the Kuiper Belt.
Do Big Black Holes Wander the Galaxy?
New simulation work suggests that galaxies like the Milky Way could be home to a dozen supermassive black holes.