Physics
Physics theories about the multiverse are stranger than fiction
Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing that idea is challenging.
Cosmology
More Stories in Cosmology
- Space
JWST spots the earliest sign yet of a distant galaxy reshaping its cosmic environs
The galaxy, called JADES-GS-z13-1, marks the earliest sign yet spotted of the era of cosmic reionization at 330 million years after the Big Bang.
- Cosmology
A map of 14 million galaxies and quasars deepens a dark energy mystery
The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.
- Cosmology
New baby pictures of the universe deepen a cosmic mystery
Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.
- Cosmology
How we might finally find black holes from the cosmic dawn
After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.
- Cosmology
Einstein’s gravity endures despite a dark energy puzzle
The DESI project previously reported that dark energy — long thought to be constant — changes over time. A new analysis reaffirms that claim.
- Cosmology
How did dark matter shape the universe? This physicist has ideas
Theoretical physicist Tracy Slatyer proposes new scenarios for dark matter and helped discover the Fermi bubbles.
- Particle Physics
A neutrino mass mismatch could shake cosmology’s foundations
Cosmological data suggest unexpected masses for neutrinos, including the possibility of zero or negative mass.
- Physics
How to spot tiny black holes that might pass through the solar system
Flybys of primordial black holes may occur once a decade. Tweaks to the orbits of planets and GPS satellites could give away their presence.
- Cosmology
In an epic cosmology clash, rival scientists begin to find common ground
Different measurements of the cosmic expansion rate disagree. The James Webb telescope could determine whether that disagreement is real.
