cosmology
Latest about cosmology

Dark energy remains a mystery. Maybe AI can help crack the code
By Robert Lea published
Dark energy has humans stumped. The force is sometimes even labeled "the worst prediction in the history of physics." Can AI do any better?

Major X-ray sky survey could relieve crisis surrounding the universe's 'lumpiness'
By Robert Lea published
Observations of galactic clusters made by the eROSITA X-ray all-sky survey could help solve a troubling tension in cosmology surrounding the 'lumpiness' of matter in the universe.

The universe might be younger than we think, galaxies' motion suggests
By Keith Cooper published
The motions of satellites in galaxy groups tell us that such groupings, and therefore possibly the universe, are younger than what standard cosmology tells us.

Unexpected cosmic clumping could disprove our best understanding of the universe
By Ben Turner published
The new study of galaxies, centered around a value for cosmic lumpiness known as S8, could join the Hubble tension in dethroning our best picture of how the universe evolved.

After 2 years in space, the James Webb Space Telescope has broken cosmology. Can it be fixed?
By Ben Turner published
For decades, measurements of the universe's expansion have suggested a disparity, which threatens to break cosmology as we know it. The James Webb Space Telescope is looking at it.

The universe is expanding faster than theory predicts – physicists are searching for new ideas that might explain the mismatch
By Ryan Keeley published
The universe is not just expanding – its rate of expansion is accelerating. And that expansion rate is even faster than the leading theory predicts it should be, leaving cosmologists puzzled.

James Webb Space Telescope reveals most distant Milky Way galaxy doppelganger
By Sharmila Kuthunur published
Astronomers have found the most distant Milky Way look-alike we've seen the universe, challenging theoretical predictions of galaxy evolution.

Largest-ever computer simulation of the universe escalates cosmology dilemma
By Sharmila Kuthunur published
The first efforts toward simulating all components of the universe fail to resolve the S8 tension. Is the standard theory of cosmology in trouble?

Dark energy may allow black holes to live in 'perfect pair' binaries
By Robert Lea published
Binary black holes are believed to inevitably spiral together, but dark energy and the expanding universe could help them maintain a safe distance and mimic a single black hole.

The James Webb Space Telescope's early galaxy images were oddly bright. Now we know why
By Keith Cooper published
Distant galaxies that existed a few hundred million years after the Big Bang are brighter than expected in JWST images because they were experiencing bursts of intense star formation.
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