Adam Riess Delivers 2026 Reines Lecture on Accelerating Universe Expansion
Updated
Updated · UCI News · Jun 8
Adam Riess Delivers 2026 Reines Lecture on Accelerating Universe Expansion
1 articles · Updated · UCI News · Jun 8
Summary
June 1’s Reines Lecture at UC Irvine featured Nobel laureate Adam Riess focusing on the unresolved question of why the universe’s expansion is speeding up.
Riess said his measurements track galaxy recession using supernova brightness and red-shifted light, a method central to gauging how fast the cosmos is expanding.
The 2011 Physics Nobel winner linked the puzzle to dark energy and dark matter, saying empty space may exert a repulsive gravitational effect similar to Einstein’s idea.
That mystery sits at the intersection of general relativity and quantum theory, Riess said, making it one of cosmology’s biggest open problems and a possible path to deeper physics.
Is dark energy the ultimate key to unifying Einstein's universe with the strange rules of quantum physics?
Is our entire model of the universe broken? A cosmic mismatch now challenges long-held theories.
Could an alternative theory of gravity explain dark energy and replace black holes with wormholes?
The Hubble Tension and the Accelerating Universe: New Data, New Physics, and the Future of Cosmology
Overview
The report explores the latest developments in cosmology, centering on Adam Riess's anticipated 2026 Reines Lecture, which will address the universe's accelerating expansion and the persistent Hubble Tension. This tension refers to the puzzling difference between the expansion rate measured in the nearby universe and the rate predicted for the early universe using cosmological models. Astronomers use a 'cosmic distance ladder' to measure local expansion, and recent analyses have confirmed a higher local rate, deepening the mystery. These findings highlight a significant challenge to our understanding of the cosmos and point toward the need for new physics.