Rare 'firework morphology' of supernova remnant Pa 30 may be due to white dwarf wind

In 1181 AD, a bright "guest star" was observed to linger in the sky for around six months. Nearly 850 years later, the likely ...
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For first time, scientists see the very early stages of a supernova

WASHINGTON (Reuters) -The explosive death of a star - a supernova - is among the most violent cosmic events, but precisely how this cataclysm looks as it unfolds has remained mysterious. Scientists ...