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UN nuclear watchdog warns of ‘grave hour’ amid fresh shelling of Ukraine’s Zaporizhzhia plant

The United Nations nuclear watchdog has called for officials to visit Ukraine’s Zaporizhzhia power plant as soon as possible amid renewed shelling in the area and warnings of the “catastrophic consequences” of continued fighting near Europe’s largest atomic plant. “This is a serious hour, a grave hour and the IAEA [International Atomic Energy Agency] must …

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Zeta Ophiuchi: Spectacular Shock Wave From Rejected Star Hurtling Through Space at 100,000 Miles per Hour

Zeta Ophiuchi: Spectacular Shock Wave From Rejected Star Hurtling Through Space at 100,000 Miles per Hour

Zeta Ophiuchi was once in close orbit with another star, before being ejected when this companion was destroyed in a supernova explosion. Infrared data from Spitzer reveal a spectacular shock wave that was formed by matter blowing away from the star’s surface and slamming into gas in its path. Data from Chandra show a bubble …

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