Evidence Grows That Dark Energy Changes Over Time

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The latest Dark Energy Spectroscopic Instrument results fall short of the discovery threshold but strengthen evidence for dynamical dark energy.

One alternative theory proposes that the universe may be filled with a fluctuating form of dark energy dubbed “quintessence.” There are also several other alternative models that assume the density of dark energy has varied over the history of the universe.

Last year’s results were based on analysis of a full year’s worth of data taken from seven different slices of cosmic time and include 450,000 quasars, the largest ever collected, with a record-setting precision of the most distant epoch (between 8 to 11 billion years back) of 0.82 percent.

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Article Details

Author / Journalist: Jennifer Ouellette, Ars Technica

Category: TechnologyEconomy

Markets: United States

Topics: Science / Space Science Science / Physics and Math

Source Website Secure: Yes (HTTPS)

News Sentiment: Neutral

Fact Checked: Legitimate

Article Type: News Report

Published On: 2025-03-20 @ 22:00:00 (1 days ago)

News Timezone: GMT +8:00

News Source URL: wired.com

Language: English

Article Length: 1854 words

Reading Time: 11 minutes read

Sentences: 85 lines

Sentence Length: 22 words per sentence (average)

Platforms: Desktop Web, Mobile Web, iOS App, Android App

Copyright Owner: © Wired

News ID: 27202505

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