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Age Of The Universe

All articles tagged with #age of the universe

science2 years ago

"Revisiting the Age of the Universe: New Study Suggests a Younger Cosmos"

A new study published in Nature Astronomy challenges the current estimate of the universe's age of 13.8 billion years, suggesting that it may be younger. The study, based on measurements of galaxy motions, indicates discrepancies with the Standard Model of cosmology. While the findings hint at a younger universe, further observational data is needed to determine the extent of the discrepancy and the true age of the universe.

via BGR|
#age-of-the-universe#astronomy#cosmology
astronomy2 years ago

"Revised Theory Doubles Estimated Age of the Universe"

A new theory proposes that the age of the universe is actually 26.7 billion years, twice as old as previously believed. This theory is based on observations made by the James Webb Space Telescope (JWST) that cannot be explained by current cosmological models. The "impossible early galaxy" observations made by the JWST suggest that some galaxies dating to the cosmic dawn have features that indicate a longer period of evolution than expected. The proposed model combines the tired light model with a cosmological model based on evolving coupling constants, and it stretches the formation time of galaxies, providing enough time for the observed "impossible" early galaxies to form.

via The Conversation|
#age-of-the-universe#astronomy#cosmology
astronomy2 years ago

Oddball Milky Way's neighboring star cluster may be almost as ancient as the universe.

The age of the globular star cluster M92 has been estimated at 13.8 billion years, plus or minus 0.75 billion years, using a new technique that generated model star clusters and compared them with observations of 18,000 of M92's stars. This almost exactly matches the estimated age of the universe, which may force us to rethink our estimates of the universe's age. M92 is a favorite object for amateur astronomers and a candidate for the oldest globular cluster in our near vicinity. The paper is published in the Astrophysical Journal, and a preprint is available on ArXiv.org.

via IFLScience|
#age-of-the-universe#astronomy#globular-cluster
science2 years ago

Exploding star offers insights into universe's age and expansion rate.

Scientists have used a third technique to measure the age of the universe, involving supernovae and gravitational lensing discoveries from 2014 and 2015. By analyzing the time delays between recurring images, researchers were able to measure the age of the universe through the Hubble Constant, using a theory developed in 1964 by Norwegian astronomer Sjur Refsdal. The results suggest that the age of the universe is around 13 billion years, but there is still debate over the accuracy of this measurement.

via The Register|
#age-of-the-universe#cosmology#gravitational-lensing