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Recovery of nova spotted by ancient Koreans illuminates many stages of star system’s life cycle

On a cold March night in Seoul almost 600 years ago, Korean astrologers spotted a bright new star in the tail of the constellation Scorpius. It was seen for just 14 days before fading from visibility. From these ancient records, modern astronomers determined that what the Royal Imperial Astrologers saw was a nova explosion, but they have been unable to find the binary star system that caused it - until now.

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Polish physicists observe light-by-light scattering at CERN

Another important discovery was made with a significant contribution by Polish physicists conducting research at CERN within the ATLAS experiment using the Large Hadron Collider. For the first time ever, light-by-light scattering has been observed – a very rare phenomenon consisting in an interaction between two photons.

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