By studying galaxy clusters separated by hundreds of millions of light-years, Penn physicist Patricio Gallardo and ...

Cyclic cosmology, or the big bounce, is the idea that the universe will eventually crunch back together and then go through ...

The Dark Energy Spectroscopic Instrument (DESI) has successfully completed the largest high-resolution 3D map of the universe ...

The most precise measurement yet shows the Universe is expanding faster than expected, deepening the Hubble tension. The ...

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Dark matter is supposed to be everywhere, threaded through the Milky Way and outnumbering ordinary matter by a wide margin.

“The first thing we know about the universe is that it’s really, really big,” says cosmologist Michael Turner, who has been contemplating this reality for more than four decades now. “And because the ...

For the past few years, a series of controversies have rocked the well-established field of cosmology. In a nutshell, the predictions of the standard model of the universe appear to be at odds with ...

The cracks in cosmology were supposed to take a while to appear. But when the James Webb Space Telescope (JWST) opened its lens last spring, extremely distant yet very bright galaxies immediately ...

Astronomers determined in 1929 that the universe is expanding. This was one of the most important findings in science. In 1998, two separate groups of astrophysicists discovered that the universe’s ...

Johns Hopkins University theoretical physicist Marc Kamionkowski is one of three physicists to be awarded the 2021 Gruber Cosmology Prize for their contributions to methods essential for studying the ...