I'm a lurker around here, but I had to comment this time, because the question of how we know what's inside the Earth has been bothering me since I first learned stuff about planets. Thanks for explaining not just what geologists know, but also how they know it!
I'm also a new subscriber, so I'm taking the opportunity to say hi. Probably still mostly a lurker, but I think your posts are interesting and thought-provoking.
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regna
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Date: 2014-04-22 05:51 pm (UTC)I'm also a new subscriber, so I'm taking the opportunity to say hi. Probably still mostly a lurker, but I think your posts are interesting and thought-provoking.