This Is How Big Our Galaxy Is Compared to the Biggest Galaxy of Them All

This looks at our galaxy and compares its size to the size of the largest known galaxy. Also comparing some others in-between, such as Andromeda, our closet ...

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Comment by Steve on July 12, 2011 at 5:31pm

Recent studies have shown that there are over 1000 planets that are potentially within their star's habitable zones. That's a lot more than previously assumed. And that's only from preliminary results.

 

The fact is that we are only starting to be able to detect Earth-size planets. Previous methods required planet sizes that made them gas giants

Comment by Araina on July 12, 2011 at 6:52pm
Great video thanks for posting

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