Scientists discover what powers celestial phenomenon STEVE

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The celestial phenomenon known as STEVE is likely caused by a combination of heating of charged particles in the atmosphere and energetic electrons like those that power the aurora, according to new research. In a new study, scientists found STEVE's source region in space and identified two mechanisms that cause it.
via Science Daily
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New Hubble measurements confirm universe is expanding faster than expected

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New measurements from NASA's Hubble Space Telescope confirm that the Universe is expanding about 9% faster than expected based on its trajectory seen shortly after the big bang, astronomers say.
via Science Daily
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Extracting something from nothing: A bright glow from empty space

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Particles traveling through empty space can emit bright flashes of gamma rays by interacting with the quantum vacuum, according to a new study.
via Science Daily
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NASA, FEMA, international partners plan asteroid impact exercise

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NASA and other U.S. agencies and space science institutions, along with international partners, will participate in a 'tabletop exercise' that will play out a realistic -- but fictional -- scenario for an asteroid on an impact trajectory with Earth.
via Science Daily
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