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Lost in Thought--How Important to Physics Were Einstein's Imaginings?
Physics

Lost in Thought--How Important to Physics Were Einstein's Imaginings?

Einstein’s thought experiments left a long and somewhat mixed legacy of their own

By Sabine Hossenfelder
Nobel Prize Work Took Black Holes from Fantasy to Fact
Physics

Nobel Prize Work Took Black Holes from Fantasy to Fact

Over the past century, the existence of these invisible cosmic bodies has become unmistakable

By Daniel Garisto
The Puzzle of the First Black Holes
Space

The Puzzle of the First Black Holes

Astronomers are puzzled about how the oldest supermassive black holes could have grown so big so early in cosmic history

By Priyamvada Natarajan
The Black Hole Collision That Reshaped Physics
Physics

The Black Hole Collision That Reshaped Physics

A momentous signal from space has confirmed decades of theorizing on black holes—and launched a new era of gravitational-wave astronomy

By Davide Castelvecchi and Nature magazine
Is Dark Matter Made of Black Holes?
Space

Is Dark Matter Made of Black Holes?

A hidden population of black holes born less than one second after the big bang could solve the mystery of dark matter

By Juan García-Bellido and Sébastien Clesse
Mysterious, Dusty Objects Are Swarming the Milky Way's Core
Space

Mysterious, Dusty Objects Are Swarming the Milky Way's Core

Swirling around our galaxy’s central supermassive black hole, these objects share properties with both stars and gas clouds

By Nadia Drake
Shredded Stars Offer New View of Supermassive Black Holes
Space

Shredded Stars Offer New View of Supermassive Black Holes

New techniques reveal how supermassive black holes shred entire stars

By S. Bradley Cenko and Neil Gehrels
Tangled Up in Spacetime
Space

Tangled Up in Spacetime

The collaborative project “It from Qubit” is investigating whether space and time sprang from the quantum entanglement of tiny bits of information

By Clara Moskowitz
Fiery Holes in Space and Time
Space

Fiery Holes in Space and Time

Firewalls” of particles may border black holes, confounding both general relativity and quantum mechanics

By Joseph Polchinski
Entangled Wormholes Could Pave the Way for Quantum Gravity
Physics

Entangled Wormholes Could Pave the Way for Quantum Gravity

The weird quantum phenomenon of entanglement could produce shortcuts between distant black holes

By Juan Maldacena
Escape from a Black Hole
Physics

Escape from a Black Hole

To save quantum mechanics, information must break free from black holes. New observations may help tell us how

By Steven B. Giddings
An Exit Chute from the Universe: The Story of a Historic Effort to Image a Black Hole
Space

An Exit Chute from the Universe: The Story of a Historic Effort to Image a Black Hole

After more than a decade of effort, a global network of radio telescopes revealed the first-ever picture of an enigmatic hole in spacetime

By Seth Fletcher
The Milky Way's Monster, Unveiled
Space

The Milky Way's Monster, Unveiled

Astronomers have revealed never before seen features of our galaxy’s mysterious supermassive black hole

By Lee Billings
Astronomers May Have Glimpsed Light from Merging Black Holes
Space

Astronomers May Have Glimpsed Light from Merging Black Holes

In a controversial finding, astronomers claim they have glimpsed light from merging black holes

By Scott Hershberger
Mystery Object Blurs Line between Neutron Stars and Black Holes
Space

Mystery Object Blurs Line between Neutron Stars and Black Holes

Existing in the “mass gap” dividing two classes of stellar remnants, this strange object could be the most massive neutron star, the lightest-known black hole—or something else entirely...

By Charlie Wood
Astronomers Spy Swarms of Black Holes at Our Galaxy's Core
Space

Astronomers Spy Swarms of Black Holes at Our Galaxy's Core

Anticipated but never before seen, the existence of tens of thousands of these dark objects at the galactic center could have far-reaching implications for astrophysics

By Lee Billings
Here Come the Waves
Space

Here Come the Waves

After a clutch of historic detections, gravitational-wave researchers have set their sights on some ambitious scientific quarry

By Davide Castelvecchi and Nature magazine
LIGO and Virgo Capture Their Most Massive Black Holes Yet
Space

LIGO and Virgo Capture Their Most Massive Black Holes Yet

The unexpected finding gives astronomers their first good look at previously missing “intermediate”-size black holes

By Adam Mann
Black Hole Factories May Hide at Cores of Giant Galaxies
Space

Black Hole Factories May Hide at Cores of Giant Galaxies

Gravitational-wave astronomers are probing the origins of abnormally massive black holes—and with them, the inner workings of their colossal galactic homes

By Charlie Wood
Special Report

Innovations In

What Is Spacetime?
Physics

What Is Spacetime?

Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like?

By George Musser

Departments

  • From the Editor

    Golden Age of Black Holes

  • Graphic Science

    Gravitational Waves Are Being Detected at an Increasing Pace

  • News

    Astronomers Spy a Black Hole Devouring a Neutron Star

  • Opinion

    How Andrea Ghez Won the Nobel for an Experiment Nobody Thought Would Work

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