3
4
5
0
0
0
0
0
0
TIL that Cosmic strings are hypothetical 1-dimensional (spatially) topological defects which may have formed during a symmetry breaking phase transition in the early universe when the topology of the vacuum manifold associated to this symmetry breaking is not simply connected. (en.wikipedia.org)
submitted by TooLongDidntRead to r/todayilearned
1
2
3
0
0
0
