Copy of the Soviet pennant sent on the Luna 2 probe to the moon, at the Kansas Cosmosphere, Source
Question: What is the name of the polyhedral shape of the Soviet pennant on the Luna 2 spacecraft?
note: This question is about the shape without the spherical caps, the way that the underlying shape of a football is a truncated icosahedron. In this case though I am not sure if this shape will be a polyhedron or not as the five vertices of the pentagonal faces may not lay in a plane.
"Comparison of a truncated icosahedron with the typical appearance of a football/soccer ball." Source