A line intensity map (left) shows how galaxies are clustered in the distant past. While a high-resolution telescope (bottom right) can identify individual galaxies, a lower-resolution image (upper right) can…
Category: Cosmology
We need to consider alternatives to dark matter that better explain cosmological observations
A composite image showing the distribution of dark matter, galaxies and hot gas in the core of a merging galaxy cluster. Credit: NASA Goddard Do constants of nature—the numbers that…
Einstein’s other theory of gravity could have the recipe to relieve ‘Hubble trouble’
An illustration of distant quasar, supermassive black hole-powered objects that can be used to constrain the parameters of theories of gravity. Credit: ESO/M. Kornmesser A recent study has investigated teleparallel…
New model suggests partner anti-universe could explain accelerated expansion without the need for dark energy
A depiction of a universe-antiuniverse pair. Credit: Wikipedia, CC The accelerated expansion of the present universe, believed to be driven by a mysterious dark energy, is one of the greatest…
The universe’s accelerated expansion might be slowing down
DESI has made the largest 3D map of our universe to date. Earth is at the center of this thin slice of the full map. In the magnified section, it…
Discovery of unexpected ultramassive galaxies may not rewrite cosmology, but still leaves questions
By observing different parts of the electromagnetic spectrum, the Hubble Space Telescope and James Webb Space Telescope are able to see different things in the same parts of the universe.…
What is dark energy? Inside our accelerating, expanding universe
The history of the universe is outlined in this infographic. Credit: NASA Some 13.8 billion years ago, the universe began with a rapid expansion we call the Big Bang. After…
