Rosetta's Duck-shaped Comet 67p Continually Tears Itself Apart And Reforms

1 year ago
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Comet 67P/Churyumov–Gerasimenko spins once every 12 hours at present
As its spin rate changes, the stress on its two giant lobes increases 
This causes the comet to regularly break up and then reform on its journey
Scientists estimate it would have a lifetime of 5,000 years as this erodes it 

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