NASA(@NASA):Sparkly, swirly, and surprising 🌌 @ChandraXray data shows that this galaxy, Messier 83, is unusual. Over 20 of its supernova remnants – remains from star explosions – vary drastically in X-ray brightness. Typically, the remnants' brightness would fade slowly over time.

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参加 December 2007

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2026.06.23 15:59

Sparkly, swirly, and surprising 🌌 @ChandraXray data shows that this galaxy, Messier 83, is unusual. Over 20 of its supernova remnants – remains from star explosions – vary drastically in X-ray brightness. Typically, the remnants' brightness would fade slowly over time.