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.
Cosmology
More Stories in Cosmology
- 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.
- Cosmology
Strange observations of galaxies challenge ideas about dark matter
A new look at how light bends as it travels through the universe could point to an alternative theory of gravity.
- Cosmology
The universe may have a complex geometry — like a doughnut
Physicists haven’t yet ruled out the possibility that the universe has a complicated topology in which space loops back around on itself.
- Cosmology
The largest 3-D map of the universe reveals hints of dark energy’s secrets
A year of data from DESI, the Dark Energy Spectroscopic Instrument, suggests that, contrary to expectations, dark energy might vary over time.
- Space
Did the James Webb telescope ‘break the universe’? Maybe not
There’s no need for strange new physics to explain anomalously bright, massive galaxies seen by JWST, Hubble data suggest.
- Cosmology
New JWST images suggest our understanding of the cosmos is flawed
JWST data don’t resolve a disagreement over how fast the universe is expanding, suggesting we might need strange new physics to fix the tension.
- Astronomy
JWST’s hunt for distant galaxies keeps turning up surprises
In its first year, the James Webb Space Telescope has found many galaxies from the early universe that are bigger, brighter and more mature than expected.
- Space
The James Webb telescope may have spotted stars powered by dark matter
Three objects in the distant universe bear signs of hypothesized “dark stars,” researchers claim, though others say more definitive data are needed.
- Physics
Centuries on, Newton’s gravitational constant still can’t be pinned down
A new experiment could finally answer the question 'What is the strength of gravity?' But it's a hard test to do.
