21–40 of 343 results
Dust devil on Earth

Solar System

Video: Chasing Dust Devils

Scientists are flying instrument-laden drones through whirlwinds on Earth to better understand their counterparts on other worlds in the solar system.

Illustration of black holes merging

Black Holes

60-Second Astro News: Black Hole Hubbub

The Milky Way's black hole' flares unexpectedly, a distant black hole gets the hiccups, and a reanalysis of LIGO data shows the first detection of black hole "ringdown."

warped galaxy disk

Milky Way

Warped Milky Way in 3D

Astronomers have used pulsating stars to trace the crooked shape of our galaxy’s disk.

star in gravitational well

Black Holes

Galactic Center Gravity Test Confirmed

A second team of astronomers has now confirmed the light from a star passing near our galaxy’s central black hole behaved as predicted by Einstein’s theory of gravity.

Event Horizon Telescope 2017

Black Holes

How Does the Event Horizon Telescope Work?

The Event Horizon Telescope creates the image of a black hole shadow thanks to the precise coordination of a worldwide telescope network. Here’s how they do it.

shadow image of M87

The Black Hole Files with Camille Carlisle

Scientists Unveil First Black Hole Image

The Event Horizon Telescope collaboration has reconstructed the shadow of a supermassive black hole.

primordial black hole illo

The Black Hole Files with Camille Carlisle

Could Dark Matter Be Black Holes?

Astronomers are reconsidering primordial black holes as an answer to the invisible matter mystery, but recent observations disfavor at least some sizes of black hole.

Pan

Solar System

Saturn's Rings Built Up Its Tiny, Close-in Moons

A new study of observations from NASA's Cassini sheds light on the tiny moons that orbit within Saturn's vast ring system.

'Oumuamua

Solar System

‘Oumuamua "Sped Up" in the Inner Solar System. This Might Be Why.

Astronomers think a jet-powered rocking motion could solve the puzzle.

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

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.

hotspot near event horizon

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.

Cygnus A in radio

Black Holes

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

Astrobiology

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

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.

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