Axions

Ultralight particles proposed to solve fundamental puzzles and interact with gravity at cosmological scales.

Articles about Axions

Space
Cosmic Knots: A New Origin Story

Cosmic Knots: A New Origin Story
A new Physical Review Letters paper proposes stable 'cosmic knots' formed after the Big Bang could have produced heavy neutrinos that tipped the balance toward matter; the idea ma…
Physics
Universe May End in 33 Billion Years

Universe May End in 33 Billion Years
A new theoretical analysis using recent dark‑energy measurements argues the cosmos could reverse and collapse in a ‘big crunch’ in roughly 33 billion years; the result depends on …