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The
Exploratorium's Guide to Astronomy Resources.
Build
a Solar System-
Find out what space is really like with this scale
model.
Your
Weight on Other Worlds-
A cool exhibit for the weight
conscious.
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Join
us on August 11, 1999 for the final total solar eclipse of
the the millennium! Live Webcast!
Stories
on the science, human history, and natural wonder of solar
eclipses.
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Dark
spots, some as large as 50,000 miles in diameter, move
across the surface of the sun, contracting and expanding as
they go.
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