Astronomers used James Webb Space Telescope data to determine the density of the universe's most mysterious "stuff." ...

The 1998 discovery that the universe is expanding at an accelerated rate raised new and profound questions about the nature and fate of the universe. Based on measurements of the speed of distant ...

Six years of Dark Energy Survey observations combine four cosmological probes to refine measurements of cosmic expansion, dark energy behavior, and matter clustering across billions of years.

Neutrino particles have extremely small masses, yet there are so many of them that they carve out the large-scale structure ...

The birth, growth and future of our universe are eternally fascinating. In the last decades, telescopes have been able to observe the skies with unprecedented precision and sensitivity. Our research ...