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#798938 - 01/03/13 06:21 AM Solar System - Our Neighborhood * new article *
Mona - Astronomy Offline
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Elephant

Registered: 05/01/10
Posts: 4484
Loc: United Kingdom

Come tour the Solar System. It's our neighborhood, the star system in which we live. The Sun's gravity holds it all together - planets, dwarf planets, moons, asteroids, comets, Kuiper Belt objects. See what lies between the Sun and the farthest edge of the Oort Cloud.

Solar System - Our Neighborhood
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#798992 - 01/03/13 11:16 AM Re: Solar System - Our Neighborhood * new article * [Re: Mona - Astronomy]
Jilly Offline
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Registered: 02/26/03
Posts: 14392
Loc: Verde Valley, AZ
What a fantastic tour! I had not heard of the scattered disk. NOt clear what that is.

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#799101 - 01/04/13 10:48 AM Re: Solar System - Our Neighborhood * new article * [Re: Jilly]
Mona - Astronomy Offline
BellaOnline Editor
Elephant

Registered: 05/01/10
Posts: 4484
Loc: United Kingdom
The scattered disk was new to me when I researched the Kuiper Belt some while ago, Jilly. I'm not surprised that you aren't clear what it is, because astronomers aren't either! Some put it as an extension to the Kuiper Belt, but others refer to it as a separate region because the objects in it behave differently. If I'm still around when they get enough evidence to decide, I can rewrite the Kuiper Belt!

But it's harder to study those outer regions than it is to study galaxies millions/billions of light years away. The galaxies give out radiation and telescopes can detect that. The small, icy bodies that get scarcely any sunlight are very tricky.
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