What's up in

Cosmology

Latest Articles

How Quantum Pairs Stitch Space-Time

April 28, 2015

New tools may reveal how quantum information builds the structure of space.

Wormholes Untangle a Black Hole Paradox

April 24, 2015

A bold new idea aims to link two famously discordant descriptions of nature. In doing so, it may also reveal how space-time owes its existence to the spooky connections of quantum information.

Dark Energy Tested on a Tabletop

March 31, 2015

Is dark energy a cosmic chameleon that can fade into its surroundings? A recent test brings the mysterious anti-gravitational force down to earth.

Joint Dust Analysis Deflates Big Bang Signal

January 30, 2015

No definitive evidence for cosmic inflation is found, but support remains strong for the theory even as critics highlight its shortcomings as an explanation for how and why the universe began.

Multiverse Collisions May Dot the Sky

November 10, 2014

Early in cosmic history, our universe may have bumped into another — a primordial clash that could have left traces in the Big Bang’s afterglow.

In a Multiverse, What Are the Odds?

November 3, 2014

Testing the multiverse hypothesis requires measuring whether our universe is statistically typical among the infinite variety of universes. But infinity does a number on statistics.

Dwarf Galaxies Dim Hopes of Dark Matter

October 25, 2014

For five years physicists have been tantalized by possible evidence of dark matter in the Milky Way’s center. But new results from small satellite galaxies have complicated the story.

‘Big Bang Signal’ Could All Be Dust

September 21, 2014

Cosmic dust in the high latitudes of the Milky Way could account for the entire swirl pattern that had been presented as proof of a leading Big Bang theory, according to a new data analysis from the Planck satellite.

Q&A

Finding Dark Energy in the Details

September 18, 2014

The astrophysicist Joshua Frieman seeks to pinpoint the mysterious substance driving the accelerating expansion of the universe.

Get highlights of the most important news delivered to your email inbox