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Go Back   The Trek BBS > Entertainment & Interests > Science and Technology

Science and Technology "Somewhere, something incredible is waiting to be known." - Carl Sagan.

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Old August 20 2009, 02:35 PM   #1
trekkiedane
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Io transit on Ganymede - Cool images!

Here's the story:

http://www.cloudynights.com/ubbthrea...4/Main/3278322

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Old August 20 2009, 03:13 PM   #2
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Re: Io transit on Ganymede - Cool images!

Nice image. Question for you astronomer buff's, is Io that much bigger than Ganymede? The shadow seems pretty huge, so either there's a big size difference, or they pass real close there.
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Old August 20 2009, 03:22 PM   #3
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Re: Io transit on Ganymede - Cool images!

Ganymede is the largest moon in the entire Sol system, it has a mean radius of 2634.1 ± 0.3 km (0.413 Earths) Io has a mean radius of 1,821.3 km (0.286 Earths) (Wikipedia)
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