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Repulsive gravity as an alternative to dark energy (Part 1: In voids)

(PhysOrg.com) -- When scientists discovered in 1998 that the Universe is expanding at an accelerating rate, the possibility that dark energy could explain the observation was intriguing. But because there has been little progress in figuring out exactly what dark energy is, the idea has since become more of a problem than a solution for some scientists. One physicist, Massimo Villata of the National Institute for Astrophysics (INAF) in Pino Torinese, Italy, describes dark energy as “embarrassing,” saying that the concept is an ad hoc element to standard cosmology and is devoid of any physical meaning.

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Antibiotic Resistance Is Taking Out "Last-Resort" Drugs Used to Combat Worrisome Category of Germs

There are so many news stories about antibiotic resistance these days that you may be tempted to ignore them all just to preserve your sanity. But there is a kind of hierarchy of danger when it comes to figuring out which stories are most deserving of your attention

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