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January 23, 2023

Mitochondrial structure. Illustration: depositphotos.com

The DNA is decreasing

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For 1.5 billion years, the mitochondria - the powerhouse of the cell - have been sending DNA segments to the cell nucleus, and they merge with the DNA in the nucleus. A new study found that the contribution of the mitochondria to the DNA in the cell nucleus gradually decreases. This process is expected to reduce the incidence of some hereditary diseases
Artist's rendering of a gamma-ray burst caused by a powerful collision between two massive neutrino stars after their spiral dance of death. In addition to high-energy radiation and material emitted in a narrow jet, the event is thought to be the main factory in the universe of heavy elements, including gold and platinum. Credit: A. Simonnet (Sonoma State University) and Goddard Space Flight Center

A burst of gamma radiation that lasted almost a minute

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The radiation originates in binary stars that have merged after being ejected from their galaxy. Usually bursts that do not occur within a galaxy last a few seconds. In such eruptions, heavy elements including gold and platinum are formed
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