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View Full Version : Extrasolar Dust Disks and Oort Clouds?



EDG
2009-Apr-28, 03:23 PM
I know we haven't even really got solid observational proof of our own system's Oort Cloud yet, but has anyone detected Oort Clouds around other stars yet (that have or don't have planets)?

I keep hearing about circumstellar dust disks, but are those the equivalent of our Kuiper belt, or are they more like our asteroid belt? If we were to observe our own Sun from a few lightyears away, would we see disks similar to the ones we see around other stars? Would we be able to see the oort cloud from outside? I suspect the fact that it's supposed to be spherical would make it harder to detect than a disk...

Do stars that lack dust disks necessarily lack planets too?