Many spacecraft have twofold symmetry, some have fourfold symmetry.

Have any spacecraft had threefold symmetry?

I'm specifically looking at ones that don't land on the surface of a planet/moon/whatever.

  • $\begingroup$ Iridium satellites too, I'd suggest. (Three large antenna panels.) $\endgroup$
    – Andy
    Apr 25, 2016 at 8:41

1 Answer 1


There is COBE the Cosmic Background Explorer.

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And the Inflatable Antenna Experiment launched on STS-77

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At least until it got all twisted up.


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