World’s most powerful space telescope measures the expansion rate of the universe

NASA’s James Webb Space Telescopecontinues to offer scientists unprecedented opportunities to reveal the secrets of the universe. This telescope, which provides in-depth data on many subjects from black hole mergers to protoplanet disks, is now expansion rate of the universe It will help you measure more precisely than ever before. This study “Hubble voltagecan solve the problem known as ” and find that this tension Actually can prove it doesn’t exist.

Hubble tension may disappear

We have known for almost a century that the universe is expanding. astronomer in 1929 Edwin HubbleSince discovering that more distant objects are moving away from us faster, scientists have been using this expansion rate, i.e. Hubble constantit is difficult to determine exactly. This value has major effects on the total age of the universe and its evolution over time. Although the results obtained to date do not appear to be dramatically different, these small differences can have large astronomical consequences when evaluated across billions of light years.

The same result was achieved with three different methods

According to Wendy Freedman, this harmony obtained from three different types of stars is an indication that they are on the right track. This value falls within the margin of error of the cosmic microwave background calculation. This suggests that the high values ​​in previous analyzes were due to limited data, but that Webb’s sharp infrared eyes were able to make more accurate measurements.

Hubble tensions have not completely disappeared. The study has not yet been peer-reviewed, but is available as a preprint on the arXiv server and has been submitted for publication in the Astrophysical Journal. Future observations with Webb and other next-generation telescopes seem to be critical to confirm the Hubble constant and end the tension.

Source

https://www.tweaktown.com/news/99962/worlds-most-powerful-space-telescope-measures-expansion-rate-of-the-universe/index.html

https://news.uchicago.edu/story/new-webb-telescope-data-suggests-our-model-universe-may-hold-after-all

https://arxiv.org/abs/2408.06153

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