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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 on 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.
Somewhat surprising, since the expectation would be that pits on cometary surfaces form by expansion of gases increasing pressure in cavities within the comet, eventually resulting in an eruption of mass from the comet. And the low gravity of a comet would cause the sinkholes to only form slowly.
The discovery is expected to help scientists piece together a better understanding of how comets formed and evolved.
But there are many pieces of the puzzle still to be found.
Here's the article from Reuters. See, also, our coverage of Philae Comet Lander has Woken Up Again. Wikipedia has more information on Comet 67P/Churyumov-Gerasimenko.
Original Submission
(Score: 0) by Anonymous Coward on Friday July 03 2015, @07:51AM
I do not think there is any indication the electric universe idea has been shown to be correct. That does not mean it is wrong, but they simply have never put the ideas into testable form yet. Either way, this thread is extremely interesting. You can see them laughing, yes laughing, at many design decisions regarding the mission that later turned out to be flawed:
http://www.thunderbolts.info/forum/phpBB3/viewtopic.php?f=4&t=15172 [thunderbolts.info]
That does not at all mean their alternative theories are correct, but there does appear to be an overconfidence in the "dirty snowball" theory regarding comets.