Dark energy might be weakening + 1 more story

Today ChatGPT read 18296 top news stories. After removing previously covered events, there are 2 articles with a significance score over 5.9.

[6.3] Largest 3D map of the universe hints dark energy is becoming weaker — abc.net.au

Scientists using the Dark Energy Spectroscopic Instrument (DESI) have developed the largest 3D map of the universe. This map suggests that dark energy, responsible for the universe's expansion after the Big Bang, may not be constant and could be weakening.

The DESI project collected data from over 14 million galaxies using the Mayall Telescope in Arizona. These findings challenge the existing Lambda-CDM model, which assumed constant dark energy. Researchers are comparing this data with other astronomical surveys to verify results.

Despite these findings, scientists are cautious. Current measurements are at "4.2 sigma," with 5 sigma needed for confirmation. Researchers plan to gather more data from DESI's ongoing observations to further analyze dark energy's role in the universe.

[6.1] Research shows modern humans evolved from two ancient populations — cam.ac.uk

Researchers at the University of Cambridge have discovered that modern humans result from a genetic mix between two ancient populations that diverged around 1.5 million years ago. This challenges the previous belief that Homo sapiens emerged from a single lineage in Africa.

The study, published in Nature Genetics, highlights that one population contributed about 80% of modern human genes, while the other contributed 20%. This earlier mixing event, occurring around 300,000 years ago, was substantial compared to the later interbreeding with Neanderthals and Denisovans.

The research utilized a new computational model to analyze modern human DNA from the 1000 Genomes Project. The findings suggest that human evolution involved more complex interactions, rather than clear, distinct lineages. The team plans further studies to refine their model and explore relationships with fossil evidence.

Highly covered news with significance over 5.5

[5.8] EU allocates €800 billion for independent defense strategy
(politico.eu + 35)

[5.8] Experimental drug shows promise in delaying Alzheimer's symptoms
(apnews.com + 14)

[5.6] Bird flu outbreak reaches unprecedented levels globally
(globalnews.ca + 18)

[5.8] Euclid telescope releases first data on 26 million galaxies
(rte.ie + 15)

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