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Neutron star

Stellar Science

What’s Inside Neutron Stars?

Size measurements of two neutron stars have narrowed down what kinds of exotic matter might exist in their extremely dense cores.

Artist’s impression of a binary neutron star and the gravitational waves the system emits.

Professional Telescopes

How to Warn of Imminent Neutron Star Collisions

What if gravitational-wave observatories could send out alerts right after — or even before — receiving signals of neutron star collisions?

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.


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.


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.

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.

Stellar Science

Two Explosions with Similar Quirks

High-energy radiation released during the merger of two neutron stars last year has left astronomers puzzled. Could a burst of gamma rays from 2015 help us to piece together a coherent picture of both explosions?

Astronomy & Observing News

Low-key supernova marks possible birth of neutron star duo

A massive star lost most of its mass before exploding and creating a neutron star — and a second nearby neutron star might have been the thief.

Stellar Science

Seen at Last: A Superfast Jet Streams Away from Neutron-star Smashup

A new finding suggests that LIGO’s neutron-star merger was a typical gamma-ray burst after all.

Supernova Remnant E0102

Stellar Science

Astronomers Discover Lonely Neutron Star with a Curious Past

New observations have helped astronomers identify the source of a 2,000-year-old supernova explosion. But this blast, and the neutron star that created it, seem to have a curious history that defies explanation.

Hubble images most distant star

Astronomy & Observing News

60-Second Astro News: Imaging Black Hole Jets and Distant Stars

Astronomy news this week: Hubble images the most distant star, radio telescopes combine forces to probe black hole jet, and neutron star hotspots explained.

Neutron star with red giant companion

Stellar Science

Astronomers Witness X-ray Burst from Newborn Neutron Star

Astronomers have discovered a newborn neutron star in a rare pairing with an old red giant companion.

Neutron stars just before merger (artist's concept)

Stellar Science

Neutron Stars Discovered on Collision Course

Got any plans in 46 million years? If not, you should keep an eye out for PSR J1946+2052 around that time — this upcoming merger of two neutron stars promises to be an exciting show!

Explore the Night with Bob King

Nights of the Living Dead — What Stars Leave Behind

Stars leave interesting messes after they die: diamond-studded puffballs, neutron stars, and black holes. We explore an example of each in June's night skies.

Measuring vacuum birefringence

Astronomy & Observing News

Does This Neutron Star Confirm an 80-Year-Old Quantum Prediction?

Scientists have been looking for decades to confirm a weird quantum effect first predicted in 1936. Have they finally found hard evidence for it?

two black holes in the moments before a catastrophic collision

Black Holes

LIGO Detects Second Black Hole Collision

The gravitational wave observatory has detected a second event, heralding a new era in astrophysics. The day after Christmas last year, the cosmos quietly gifted scientists with gravitational waves — ripples in the fabric of spacetime – produced in a collision between two stellar-mass black holes. It’s the second event…

A Sense of Scale

Explore the Night with Bob King

There Be Monsters Here! How to Find the Biggest Star

Antares and Betelgeuse may be colossal stars, but we take it to the next level of stellar monstrosity with a visit to UY Scuti, a star that makes our Sun seem no bigger than a pinpoint.

Milky Way

Witnessing Light Echoes from a Neutron Star

X-ray echoes from binary star system Circinus X-1 are helping astronomers measure its distance from Earth.

Stellar Science

Taming the "Zoo" of Neutron Stars

These stellar corpses have many faces, from pulsars to magnetars. New models provide evidence for unifying these disparate objects under one theory.

Stellar Science

Neutron Star Gobbles Gas, Burps X-rays

Astronomers have observed a neutron star flaring to 10,000 times its original brightness.