21–40 of 334 results
Sgr A*

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.

Cassini Grand Finale

Solar System

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.

green flash

Astronomy and Society

We Don’t Really Know When the Sun Rises

Hundreds of sunrise and sunset times reveal that there’s something amiss with our calculations.

hotspot around black hole

Black Holes

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.

3C 273

The Black Hole Files with Camille Carlisle

Rotating Gas in a Quasar’s Heart

Astronomers have “imaged” gas as it orbits a supermassive black hole some 2 billion light-years away.

Illustration of black holes merging

Black Holes

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.

hotspot near event horizon

The Black Hole Files with Camille Carlisle

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.

Cygnus A in radio

The Black Hole Files with Camille Carlisle

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.

Milky Way ancient merger

Galaxies

Ancient Merger Wreckage in the Milky Way

Mounting evidence indicates that our galaxy smashed up another smaller galaxy roughly 10 billion years ago.

water plume on Europa

Solar System

Source for Europa Geysers Missing

A new look at old data suggests there’s something missing from suspected plumes on Europa: a heat source.

Still from simulation of two supermassive black holes merging

Black Holes

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, color-enhanced

Spacecraft and Space Missions

Jupiter’s Magnetic Field Has Weird Structure

Juno observations reveal that Jupiter’s magnetic field has a wacky plume.

Stars orbit black hole

Black Holes

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.

tidal disruption event illustration

Black Holes

Black Hole Destroys Star and Shoots Jet

Astronomers have watched the growth of a jet fueled by a shredded star.

wormhole mouth

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.

Mojave drill site on Mars

Spacecraft and Space Missions

Methane and Other Organics on Mars

The Curiosity rover has detected organic molecules in ancient rocks on Mars.

G2 en route to black hole

The Black Hole Files with Camille Carlisle

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

Spacecraft and Space Missions

Dunes on Pluto

Planetary scientists think they’ve found wind-built ripples of methane ice on the king of the Kuiper Belt.

Black Holes

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.

galaxy without dark matter

Galaxies

A Galaxy Without (Much) Dark Matter

Astronomers have found a peculiar object: a fluffy galaxy that has little to no dark matter.

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