Question

what is actually cosmic string.?​

Answer 1

Cosmic strings are hypothetical.These are predicted when the ancient fields were frozen in mainly fabric of space time.But any body don't know that these strings exist even scientists are working on this.This was formed in the early universe

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Answer 2

Answer:

Cosmic strings are hypothetical 1-dimensional 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 was not simply connected.

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