Friday 29 September 2017

Trilobites: Rosetta’s Lost Picture From Moments Before It Struck a Comet

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One year after the spacecraft dived into Comet 67P/Churyumov-Gerasimenko, it gave scientists a gift from beyond the grave.
via New York Times

Small collisions make big impact on Mercury's thin atmosphere

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Mercury, our smallest planetary neighbor, has very little to call an atmosphere, but it does have a strange weather pattern: morning micro-meteor showers.
via Science Daily
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A fresh look at older data yields a surprise near the Martian equator

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Scientists taking a new look at older data from NASA's longest-operating Mars orbiter have discovered evidence of significant hydration near the Martian equator -- a mysterious signature in a region of the Red Planet where planetary scientists figure ice shouldn't exist.
via Science Daily
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Puppis A Supernova Remnant

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Driven by the explosion of a massive star, supernova remnant Puppis A is blasting into the surrounding interstellar medium about 7,000 light-years away. At that distance, this colorful telescopic field based on broadband and narrowband optical image data is about 60 light-years across. As the supernova remnant (upper right) expands into its clumpy, non-uniform surroundings, shocked filaments of oxygen atoms glow in green-blue hues. Hydrogen and nitrogen are in red. Light from the initial supernova itself, triggered by the collapse of the massive star's core, would have reached Earth about 3,700 years ago. The Puppis A remnant is actually seen through outlying emission from the closer but more ancient Vela supernova remnant, near the crowded plane of our Milky Way galaxy. Still glowing across the electromagnetic spectrum Puppis A remains one of the brightest sources in the X-ray sky.

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Tonight: Researchers’ Night at CERN