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cosmology

Black holes on a blue swirly background.
Abstractions blog

Growing Inventory of Black Holes Offers a Radical Probe of the Cosmos

February 17, 2021

One black hole is nice, but astrophysicists can do a lot more science with 50 of them.

Close-up photograph of a soap bubble with a spot on it that looks as though it must have come from a collision.
Abstractions blog

Physicists Study How Universes Might Bubble Up and Collide

January 25, 2021

Since they can’t prod actual universes as they inflate and bump into each other in the hypothetical multiverse, physicists are studying digital and physical analogs of the process.

2020 in Review

The Year in Physics

December 23, 2020

Featuring paradoxical black holes, room-temperature superconductors and a new escape from the prison of time.

Abstractions blog

Astronomers Get Their Wish, and a Cosmic Crisis Gets Worse

December 17, 2020

We don’t know why the universe appears to be expanding faster than it should. New ultra-precise distance measurements have only intensified the problem.

Infographic showing the ranges of possible masses of WIMPs, axions, ultralight dark matter, sub-GeV dark matter and primordial black holes, which are five different candidates for dark matter.
Abstractions blog

The Search for Dark Matter Is Dramatically Expanding

November 23, 2020

Physicists plan to leave no stone unturned, checking whether dark matter tickles different types of detectors, nudges starlight, warms planetary cores or even lodges in rocks.

A pink beam at the center of a metallic experimental apparatus.
Abstractions blog

Physicists Pin Down Nuclear Reaction From Moments After the Big Bang

November 11, 2020

The newly-measured rate of a key nuclear fusion process from the Big Bang matches the picture of the universe 380,000 years later.

Cora Dvorkin in front of a starry backdrop.
Hidden Structure

The Cosmologist Who Dreams in the Universe’s Dark Threads

November 5, 2020

Cora Dvorkin discovered new possibilities for what dark matter could be. Now she’s devising unorthodox ways to identify it.

Hidden Structure

The Hidden Structure of the Universe

October 22, 2020

Our new series of articles explores the search for fundamental structure at the edge of science.

Stringy filaments wiggling against a black background.
Abstractions blog

Some Physicists See Signs of Cosmic Strings From the Big Bang

September 29, 2020

Subtle aberrations in the clockwork blinking of stars could become “the result of the century.” That’s if the distortions are produced by a network of giant filaments left over from the birth of the universe.