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There might not be a mysterious ‘dark’ force accelerating the expansion of the Universe after all. The truth could be much stranger – bubbles of space where time passes at drastically different rates.

The passage of time isn’t as constant as our experience with it suggests. Areas of higher gravity experience a slower pace of time compared with areas where gravity is weaker, a fact that could have some pretty major implications on how we compare rates of cosmic expansion according to a recently developed model called timescape cosmology.

Discrepancies in how fast time passes in different regions of the Universe could add up to billions of years, giving some places more time to expand than others. When we look at distant objects through these time-warping bubbles, it could create the illusion that the expansion of the Universe is accelerating.

A sequence of stress signals among specialized clean-up cells in the brain could at last reveal why some immune responses can cause significant nerve degeneration that results in the loss of memory, judgement, and awareness behind Alzheimer’s disease.

Blocking this pathway in mouse brains modeled on Alzheimer’s prevented damage to their synapse connections and reduced the buildup of potentially toxic tau proteins – both hallmarks of the condition.

The researchers, led by a team from the City University of New York (CUNY), believe this pathway – called the integrated stress response (ISR) – causes brain immune cells called microglia to go ‘dark’ and start damaging rather than benefiting the brain.

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A blood test that can predict how long vaccine immunity will last so people can get a booster jab earlier, is being developed by scientists.

Researchers have previously been unable to predict why some vaccines produce antibodies to fight infections that last for decades while in others immunity only lasts a few months.

Now Stanford University has found tell-tale signs in the blood in the days after vaccination to indicate how quickly a person’s antibody protection will wane.

Researchers have discovered nanocrystals that toggle between luminescent states swiftly, offering a promising advancement toward optical computing.

This technology could revolutionize data processing and artificial intelligence, making devices faster and more energy-efficient while expanding capabilities in telecommunications and medical imaging.

Breakthrough in Nanocrystal Technology.

SCMP stated this latest achievement of 100Gbps transmission rate is said to be equivalent to transmitting ten full-length movies within a “single second.”

This development in satellite-to-ground laser communication will significantly enhance China’s space capabilities. It will pave the way for improved satellite infrastructure, including navigation, 6G internet, and remote sensing.

Scientists at the Francis Crick Institute have generated human stem cell models1 which, for the first time, contain notochord – a tissue in the developing embryo that acts like a navigation system, directing cells where to build the spine and nervous system (the trunk).