By embedding I mean that its edges may intersect only at their endpoints. The precise definition can be found here.
We know that the Petersen graph can be drawn in the plane such that every edge is a segment and has unit length, but that's not an embedding; the edges forming a star-shape intersect each other. We also know that every finite graph can be embedded into the 3-dimensional space with edges not necessarily of unit length.
So I'm interested in the question in the title: is it possible to embed the Petersen graph into the 3-dimensional Euclidean space such that every edge is a segment and has unit length. But it occurred to me that the vertex-position of a pentagon with sides of unit length in the 3D space may be very complicated. So is there any way to handle this?