POV-Ray : Newsgroups : povray.binaries.images : Tetrahedral planetoid revisited : Re: Tetrahedral planetoid revisited Server Time
2 Aug 2024 00:19:55 EDT (-0400)
  Re: Tetrahedral planetoid revisited  
From: Jörg 'Yadgar' Bleimann
Date: 7 Feb 2008 07:28:43
Message: <47aaf97b$1@news.povray.org>
High!

Bill Pragnell schrieb:

> The idea is to suggest a normal spherical planetoid but with mountainous peaks
> that more naturally form a tetrahedron shape. I think it's a very nice result
> so I thought I'd share it!

Not very convincing - real asteroids, especially medium-sized to large, 
are far less rugged, as their shapes are smoothed by a thick layer of 
dust produced by billions of years worth of micrometeorite impacts.
Small asteroids, especially when they are "rubble piles" loosely held 
together by microgravity rather than massive solid bodies, can have a 
somewhat rougher surface, but still not as rough as your tetrahedron.

Just look here:

Asteroid (433) Eros:
http://nssdc.gsfc.nasa.gov/planetary/mission/near/near_eros.html

Asteroid (25143) Itokawa - only about 500 metres long!
http://www.bernd-leitenberger.de/hayabusa.shtml (German, but several 
good close-up photos of Itokawa!)

See you on www.khyberspace.de !

Yadgar


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