An enneacontahedron is a polyhedron with ninety faces. There are many such polyhedra. This particular one has sixty hexagonal faces, and thirty rhombic faces. I made it using Stella 4d, a program you can try for free at http://www.software3d.com/Stella.php.
This is the day I turn 52 years old, and I’m marking the occasion with a 52-pointed star. This particular star is a compound of four thirteen-pointed stars, each shown in a different color. This works because (4)(13) = 52.
The sky bursting full of rapid and illuminated clouds, rushing bright blue against an indigo background, made me feel I was looking up at the planet Neptune, stretching from one horizon to the other. I went inside, to get my phone, to snap a picture, but, when I got back out, the eighth planet above had been replaced — by a stormy-but-normal third-planet sky. I came back inside with no images, except in memory.
(Image source: NASA / JPL / Voyager 2 / this website.)
I made these using Stella 4d, a program you can try as a free trial download at http://www.software3d.com/Stella.php.
The great icosidodecahedron is one of the uniform polyhedra, which I do not know well. I stumbled across it while creating facetings of the (lesser) icosidodecahedron. This solid has two face-types, there are red pentagrams and yellow equilateral triangles, as seen in the next two pictures.
The dual of this solid is the great rhombic triacontahedron. Its faces are thirty interpenetrating rhombi.
I used Stella 4d to create these images. You may try this program for free at http://www.software3d.com/Stella.php.
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