Tuesday, December 28, 2010

2010-12-28: Sizes of planets

Dad was very surprised this morning at breakfast when Nigel asked if Pluto is much bigger than Uranus. After a moment of stunned silence, Dad explained that, in fact, Uranus is much bigger than Pluto, which is very tiny. Nigel next asked if Earth was much smaller than Pluto. After telling Nigel that Earth was larger than Pluto, Dad thought it was time to visit the planetarium to see the scale-sized globes of each planet and demonstrate the relative sizes of each in better detail than in the "I Am The Sun" book that Nigel has been reading, which has likely served as the impetus for these questions.

Nigel knows that Mars is red and is where martians live (heh). He knows that Saturn has many rings, and that Jupiter is the very largest of all the planets. We have not talked yet about the solar system, or that there are other systems out there. Mom and Dad both point out planets when they are visible in the night sky, and recently saw the reddish-colored Mars in the sky while out for an evening walk with Nigel.

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