Chris @chrism@qoto.org

A common refrain I hear is that MOND works well in galaxies, but not in clusters of galaxies. The oft-unspoken but absolutely intended implication is that we can therefore dismiss MOND and never sp…

In this #UndergradResearch post, James Sunseri explores the possibility of using gravitational waves from colliding neutron stars to measure the Hubble Constant without observing the electromagnetic spectrum.

One of the most important issues in cosmology is the Hubble tension - why do different probes not agree on how fast the Universe is expanding? A popular solution is changing the physics in the very early Universe. Today's paper explores, why this approach might not work, by measuring the expansion rate with observables independent of the early Universe.

Do you like fast radio bursts but hate the Hubble tension? If so, then this paper showing the first measurement of the Hubble constant using FRB observations is for you!

By Rouzbeh Allahverdi, Mustafa A. Amin & 24 more. A study of the various possible evolutionary histories of cosmic expansion possible with a wide range of cosmological models with their implications for baryogenesis, nucleosynthesis, gravitational wave production, etc.

Take a journey into the furthest reaches of our cosmos and learn about the most distant galaxy we have ever observed.

India may land on the Moon this coming year, while Nasa will launch its new, powerful rocket farther into space than any other human rated spacecraft.

What is the curvature of the Universe? Today's authors use an exciting new probe to find out: Cosmological Clocks.

Subtle aberrations in the clockwork blinking of stars could become “the result of the century.” That’s if the distortions are produced by a network of giant filaments left over from the birth of the…

It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. A new series of studies has shown how the theory can work.

Cosmologists have concluded that the universe doesn’t appear to clump as much as it should. Could both of cosmology’s big puzzles share a single fix?

Astronomers are discovering that magnetic fields permeate much of the cosmos. If these fields date back to the Big Bang, they could solve a major cosmological mystery.

A study challenged the evidence for the mysterious antigravitational force known as dark energy. Then cosmologists shot back.

A reanalysis of the cosmic microwave background data suggests a slightly more curved Universe than previously measured.

A close look at fundamental symmetries has exposed hidden patterns in the universe. Physicists think that those same symmetries may also reveal time's original secret.

Will we have to rewrite Einstein's theory of gravity? The DESI experiment could find out.