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A Giant 'Blinking' Star Has Been Detected Near Our Galaxy's Center

Some 25,000 light-years from Earth, astronomers have found a weird star that almost blinked out of existence for several months before reappearing.

"It's amazing that we just observed a dark, large and elongated object pass between us and the distant star and we can only speculate what its origin is," said astronomer Sergey Koposov...

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Physicists Observe Particles Switch Between Matter and Antimatter

Antimatter, which is differentiated by having the opposite charge to normal matter, is composed of the antiparticles of normal matter.

In a world-first discovery, it was found that the charm meson, a subatomic particle made out of a charm quark and an antiquark, can travel as a mixture of their particle and antiparticle states, all the while spontaneously switching between the two...

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Deposits of Copper And Magnetic Iron Found in Alzheimer's Patients' Brains

Set aside every scrap of iron inside a human body and you might have enough to fashion a nail or two. As for copper, you'd be lucky to extract just enough to make a small earring.  
Scarce as they are, these two metals are necessary for our survival, playing essential roles in human growth and metabolism. But one place we wouldn't expect to find either is clumped inside our brain cells.

However, for people with the neurodegenerative disorder Alzheimer's disease, something seems to be turning these elements into microscopic ingots.

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The Mystery of Betelgeuse's Great Dimming Has Officially Been Solved

The cause of the star's mysterious drop in brightness was caused by a giant cloud of dust, ejected from the red supergiant - but it could only do so because the star's changing temperature allowed it.

Betelgeuse's Great Dimming, as the event has come to be known, baffled astronomers. The star, usually one of the brightest in the sky, started dimming in September 2019. By February 2020, it had dimmed by 35 percent, behavior that had never been observed before...

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