Glimpse at early universe finds expansion slowdown
BOSS project looks at acceleration rate before dark energy hit the gas
By Andrew Grant, 17:13 PM November 20, 2012
New measurements have captured the universe’s expansion when it was slowing down 11 billion years ago, before a mysterious entity called dark energy took over and began spurring the cosmos to expand faster and faster. The measurements, reported online November 12 at arXiv.org, are an important step toward understanding what dark energy is and how it works.
About 15 years ago, astronomers discovered that the universe’s expansion is accelerating by cataloging spectacular stellar explosions ca...
Source URL: https://www.sciencenews.org/article/glimpse-early-universe-finds-expansion-slowdown