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The Physicist Who Slayed Gravity’s Ghosts
Claudia de Rham showed how theories of “massive gravity” could potentially get rid of the need for dark energy.
This Cosmologist Knows How It’s All Going to End
The astrophysicist and social media phenom Katie Mack is ready to tell you about the fate of the universe.
What Might Be Speeding Up the Universe’s Expansion?
Physicists have proposed extra cosmic ingredients that could explain the faster-than-expected expansion of space.
How Ancient Light Reveals the Universe’s Contents
A photograph of the infant cosmos reveals the precise amounts of dark matter and dark energy in the universe, leaving precious little room for argument.
No Dark Energy? No Chance, Cosmologists Contend
A study challenged the evidence for the mysterious antigravitational force known as dark energy. Then cosmologists shot back.
What Shape Is the Universe? A New Study Suggests We’ve Got It All Wrong
Most every cosmologist believes the universe is flat. A new analysis argues that it’s closed.
Physics Nobel Honors Early Universe and Exoplanet Discoveries
The astronomers Michel Mayor and Didier Queloz won half of the prize for their 1995 discovery of a Jupiter-like planet orbiting a nearby star. The cosmologist James Peebles won the other half for work exploring the structure of the universe.
Cosmologists Debate How Fast the Universe Is Expanding
New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.
An Italian Cosmologist Who Wanders in Dante’s Dark Wood
A scientist and programmer with a literary bent, Valeria Pettorino thinks multiple angles and diverse points of view are needed to unriddle the nature of dark matter and dark energy.