1–20 of 373 results
Birth of a Magnetar

Stellar Science

Gamma-ray Flash Heralds Birth of a Magnetar

What happens when two neutron stars don't add up to a black hole?

Blue Ring Nebula

Stellar Science

The Case of the Blue Ring Nebula

After 16 years, astronomers have figured out the origin of a strange ring of ultraviolet light, and shed light on a common — but rarely observed — event.

Misshapen monster

Stellar Science

How Big Is Betelgeuse Really?

Knowing Betelgeuse’s size is crucial to understanding its recent bizarre behavior — and predicting when it will go supernova. But it’s harder to figure out than you might think.

Magnetar

Stellar Science

Magnetars Make Some — Maybe All — Mysterious Radio Flashes

In-depth analysis of a flash of radio waves coming from a Milky Way magnetar have convinced astronomers: Magnetars produce at least some fast radio bursts.

Artist's impression of a Y-dwarf star

Stellar Science

Taking Stock of Backyard Worlds

Scientists have used the Spitzer Space Telescope to confirm seventy-five new substars uncovered by the citizen science project Backyard Worlds: Planet 9.

Planetary nebulae (mostly)

Stellar Science

How Planetary Nebulae Get Their Shapes

New research shows why these celestial gems range in shape from spirals to butterflies.

Magnetic fields in Serpens South Cluster

Galaxies

See the Invisible: A Gallery of Magnetic Fields

Magnetic fields affect everything from star formation to galaxy evolution. View a gallery of images that show magnetism's role.

Dust-enshrouded neutron star in Supernova 1987A

Stellar Science

Neutron Star Found in Supernova 1987A

After decades of searching, astronomers have finally found the collapsed core of the nearest supernova recorded in recent history.

Artist’s illustration of a magnetar

Stellar Science

An Infant Pulsar Defies Categorization

The discovery of the youngest pulsar yet has lead astronomers to question the current classification system of these objects.

Brown dwarf

Stellar Science

Citizen Scientists Help Discover “Weird” Brown Dwarfs

Astronomers and citizen scientists have found two would-be stars lacking heavy elements. They’re most likely ancient survivors of our galaxy’s earliest days.

Magnetar

Stellar Science

Astronomers Discover a Newborn Magnetar and a New Cosmic Beat

This week, astronomers announce a newborn magnetar and a fast radio burst that's bursting to a beat.

A

Stellar Science

Two New Beasts for an Explosive Zoo

And that makes three: Astronomers are beginning to understand what may be causing a special kind of flare in the distant universe.

Delta Scuti star and light curve

Stellar Science

Astronomers Investigate Stellar Interiors

Astronomers have untangled the constantly changing brightness of variable stars known as Delta Scuti stars, yielding estimates for their ages.

Magnetar

Stellar Science

Milky Way Magnetar Makes Fast Radio Burst

Fast radio bursts are mysterious — and powerful — flashes of radio waves. Now, we've found one of these flashes coming from a magnetar in our own galaxy.

The Sun vs. Sun-like Stars

Stellar Science

How Lazy Is the Sun?

Astronomers studying hundreds of Sun-like stars were surprised to find that most of them are more active than the Sun. Why is the Sun different?

Brightest supernova

Stellar Science

Astronomers Detect One of the Most Luminous Supernovae Ever

One of the most luminous supernovae ever discovered provides evidence that such extremely bright explosions require exotic sources.

Two neutron stars prior to merger

Stellar Science

Gravitational Waves Put Ruler to Neutron Stars

Scientists have combined observations of gravitational waves from a neutron star collision with nuclear theory to shed light on the size and nature of neutron stars.

Then and now

Celestial News & Events

The Fall and Rise of Betelgeuse

With its recent uptick in brightness, Betelgeuse appears to be slowly returning to normal. But will it? Astronomers urge us to keep watch.

Betelgeuse telescopic view

Variable Stars

Is Betelgeuse Approaching a Crossroads?

Astronomers all over are waiting with bated breath to see what Betelgeuse will do next. Is it going to start brightening again on February 21st? Or will it continue to surprise?

Stellar Science

Faint Repetitions of an Extragalactic Burst

New evidence deepens the mystery of fast radio bursts (FRBs), the brief flashes of radio emission stemming from unknown sources beyond our galaxy.

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