Quote:
Originally Posted by JustAFriend
Until we can fully catalog the entire layouts of enough OTHER solar systems, you cannot judge anything by the layout of OUR solar system.
We've only detected a few hundred Jupiter-sized worlds outside our own system, so we don't even have the vaguest knowledge yet as to was is 'typical'....
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And what's more, our sample is highly biased to massive closely-orbiting planets. We could already discover true extrasolar Jupiter analogs (and we probably have), but discovering one requires data points along the complete orbit, that is over 10 years. An extrasolar Saturn analog would be much harder to find, and other planets would be currently impossible to detect.