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.
After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.
The DESI project previously reported that dark energy — long thought to be constant — changes over time. A new analysis reaffirms that claim.
Theoretical physicist Tracy Slatyer proposes new scenarios for dark matter and helped discover the Fermi bubbles.
Cosmological data suggest unexpected masses for neutrinos, including the possibility of zero or negative mass.
Flybys of primordial black holes may occur once a decade. Tweaks to the orbits of planets and GPS satellites could give away their presence.
Different measurements of the cosmic expansion rate disagree. The James Webb telescope could determine whether that disagreement is real.
A new look at how light bends as it travels through the universe could point to an alternative theory of gravity.
Physicists haven’t yet ruled out the possibility that the universe has a complicated topology in which space loops back around on itself.
A year of data from DESI, the Dark Energy Spectroscopic Instrument, suggests that, contrary to expectations, dark energy might vary over time.
