Astronomer finds that mercury has molten core
Geplaatst: vr 04 mei 2007, 13:33
Chefs have long used a simple trick to differentiate between a raw and hard-boiled egg. By spinning an egg and watching how it behaves when the spin is disrupted, it's easy to tell whether its interior is solid or liquid. Applying a similar test to the planet Mercury, astronomers have found strong evidence that the planet closest to the sun has a fluid core.
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