The World:Useful Facts

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[edit] Planet Sizes

  • Rough Estimate of the Radius of the Eearth is 6,401km. [1][2]
  • That is 12802km in diameter.
  • Mars is aproximately half that size at a diameter of about 6,792km (A radius of 3396km).
  • Pluto is only 2296 km in diameter ( 1148 km in radius). [3]
Just so you know, Pluto isn't a planet anymore.
Not sure if that really matters for our case. Besides, the argument is still in full swing. And apparently the pro-pluto guys have baseball bats! :P

[edit] References

  1. ↑ http://pubs.usgs.gov/gip/interior/
  2. ↑ http://en.wikipedia.org/wiki/Earth
  3. ↑ http://www.sciencenetlinks.com/interactives/messenger/psc/PlanetSize.html
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