Mara Johnson-Groh is a contributing writer for Live Science. She writes about everything under the sun, and even things beyond it, for a variety of publications including Discover, Science News, Scientific American, Eos and more, and is also a science writer for NASA. Mara has a bachelor's degree in physics and Scandinavian studies from Gustavus Adolphus College in Minnesota and a master's degree in astronomy from the University of Victoria in Canada.
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Is Dark Matter Fuzzy?These particles would be much tinier than electrons.
By Mara Johnson-Groh Published
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Neutrinos Entangled in the Cosmic Web May Change the Structure of the UniverseThe neutrinos enmeshed in the vast cosmic web could provide a glimpse of the earliest observable moment after the Big Bang.
By Mara Johnson-Groh Published
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Something Is Not Quite Right In the Universe, Ultraprecise New Measurement RevealsA super-precise measurement of one of the fundamental constants of the universe suggests it's expanding faster now than it was in its early years.
By Mara Johnson-Groh Published
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Ultrabright Quasar Lit Up the Early UniverseAstronomers just found a galaxy with a glowing heart that is almost as old as the universe itself.
By Mara Johnson-Groh Published
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If Aliens Are Causing Weird Dimming of 'Tabby' Star,' They Aren't Using Lasers to Do ItThe evidence for aliens around one of the weirdest stars in our galaxy — Boyajian's star — is not looking promising.
By Mara Johnson-Groh Published
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Scientists Find the 'Missing' Dark Matter from the Early UniversePast studies suggested there was less dark matter earlier on in the universe’s history.
By Mara Johnson-Groh Published
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Rare Rainfall in the Atacama Is Deadly for Its Tiniest InhabitantsWhat is supposed to be a boon to life caused bacteria to burst like balloons.
By Mara Johnson-Groh Published
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Spinning Grains of Cosmic Dust Could Explain Weird Signals at the North PoleA mysterious cosmic signal that was detected above the North Pole could be coming from fast-spinning grains of dust.
By Mara Johnson-Groh Published
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If Extra Dimensions Do Exist, They Must Be Really, Really SmallSo far, gravitational waves have found no hints of extra dimensions, but there may still be some really tiny ones lurking out there.
By Mara Johnson-Groh Published

