In HD!!! starts with the moon compares sizes, cool music! lol check it out http://www.youtube.com/watch?v=fKTu6B4Rg…
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http://sciencenetlinks.com/interactives/…
http://solarsystem.nasa.gov/planets/comp…
http://www.co-intelligence.org/newslette…
http://www.messenger-education.org/Inter…
http://solarsystem.nasa.gov/planets/comp…
http://www.co-intelligence.org/newslette…
http://www.messenger-education.org/Inter…
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The inner planets are much smaller to the outer planets, except for Pluto.
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All the inner four planets put together could fit inside the smallest gas giant planet.