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Rosetta Spacecraft Finds Massive Sinkholes on Comet's Surface

The comet being studied by Europe's Rosetta spacecraft has massive sinkholes in its surface that are nearly wide enough to swallow Egypt's Great Pyramid of Giza, research published Wednesday shows. Scientists suspect the pits formed when material on the comet's surface collapsed, similar to sinkholes on Earth, a study published in the journal Nature said. The cavities on comet 67P/Churyumov-Gerasimenko, which Rosetta has been orbiting since August, are enormous, stretching...

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