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astrophysics

Art for "Planets Found to Be Larger Than the Disks They Come From"
astrophysics

Planets Found to Be Larger Than the Disks They Come From

The new finding is challenging established theories of how planets come to be.

Art for "A Short History of the Missing Universe"
Abstractions blog

A Short History of the Missing Universe

Astronomers have known where the universe’s missing matter has been hiding for the past 20 years. So why did it take so long to find it?

astrophysics

The Last of the Universe’s Ordinary Matter Has Been Found

For decades, astronomers weren’t able to find all of the atomic matter in the universe. A series of recent papers has revealed where it’s been hiding.

Art for "Star-Swallowing Black Holes Burp Out Their Secrets"
astrophysics

Star-Swallowing Black Holes Reveal Secrets in Exotic Light Shows

Black holes occasionally reveal themselves when passing stars get ripped apart by their gravity. These tidal disruption events have created a new way for astronomers to map the hidden cosmos.

Art for "Neutrinos Linked With Cosmic Source For the First Time"
astrophysics

Neutrinos Linked With Cosmic Source for the First Time

High-energy neutrinos have been traced back to a flaring supermassive black hole known as a blazar. The long-sought link opens the door to an entirely new way to study the universe.

Photo of the sun
Abstractions blog

What Is the Sun Made Of and When Will It Die?

If and when physicists are able to pin down the metal content of the sun, that number could upend much of what we thought we knew about the evolution and life span of stars.

Illustration for "Why Can’t We Find Planet Nine?"
Abstractions blog

Why Can’t We Find Planet Nine?

Astronomers suspect that there’s a large planet hiding out in the distant fringes of the solar system. At a recent workshop, they brainstormed ways to coax it into view.

Photo for "The Milky Way Once Collided With Another Galaxy"
Abstractions blog

The Young Milky Way Collided With a Dwarf Galaxy

Astronomers have found stars dating from a long-ago collision between the Milky Way and another galaxy. The crash helps to explain why the Milky Way looks the way it does.

Illustration of a galaxy simulation.
cosmology

The Universe Is Not a Simulation, but We Can Now Simulate It

Computer simulations have become so accurate that cosmologists can now use them to study dark matter, supermassive black holes and other mysteries of the real evolving cosmos.