Published on March 14, 2017
Giant pits nearly 600 feet deep on the surface of Rosetta’s comet are likely caused by massive sinkholes, scientists say.
In a paper published in the journal Nature, researchers describe 18 mysterious depressions on the speeding comet that they say could only occur by sinkhole collapse.
On average, each of these quasi-circular holes are as wide as two football fields placed together, and some are as deep as the Washington monument is tall.
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