Cambridge, Mass. – Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+ ...

Sometimes it seems like every year offers an occasion to celebrate some sort of Einstein anniversary. In 2015, everybody lauded the 100th anniversary of his general theory of relativity. Last year, ...

The UC Irvine Department of Physics and Astronomy has established a research program in modern cosmology – an entirely new field of research at the university. The new program builds upon the ...

Sometimes a scientist can only laugh in the face of a seemingly insurmountable challenge. Such is the case with cracking the mystery of dark energy and its repulsive gravity, which is causing the ...

The long-standing problem of the cosmological constant, described both as “the worst prediction in the history of physics” and by Einstein as his “biggest blunder”, is being tackled with renewed ...

A recent resurgence of interest in a bold cosmological theory has reignited debate about the nature of dark matter, the Big Bang, and the possible existence of a mirror universe. Originally proposed ...

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When the British astrophysicist Fred Hoyle coined the phrase ‘Big Bang’ to describe the rival to his beloved ‘steady state’ theory of the Universe, he meant it to be disparaging. It was bad enough for ...

About a year after launching into orbit around the Sun, the James Webb Space Telescope began imaging an abundance of little red dots, which scientists called, um, “little red dots.” I know—not only is ...

Analyzing more than two decades' worth of supernova explosions convincingly bolsters modern cosmological theories and reinvigorates efforts to answer fundamental questions. Astrophysicists have ...