The Guest Star of 1054

Astronomers in China and elsewhere recorded a new star so bright it was visible in daylight for weeks. Today we see its debris as the Crab Nebula — we…

Why we kept this

Chinese court astronomers logged it in real time, which means the Crab Nebula has a documented birth certificate.

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If you liked that

• The Pioneer Plaque
• The Arecibo Message
• The Golden Record
• The Tunguska Event
• A scroll from an astronaut to the entire observable universe

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