According to the big bang theory, which statements are accurate about how the universe came to be? check all that apply. - it expanded slowly. - it gradually warmed. - stars and galaxies formed. - atoms such as hydrogen and helium formed. - it was no bigger than the head of a pin before it exploded.

Answer;Stars and galaxies formedAtoms such as hydrogen and helium formedIt was no bigger than the head of a pin before it explodedExplanation;Big bang theory is a theory that explains the origin of the universe.This theory states that the universe started with small singularity, then inflated over the next 13.8 billion years to the cosmos that are known today.Singularities are zones thought to exist at the core of black holes or areas of intense gravitational pressure. The universe is thought to have begun as an infinitesimally small, infinitely hot, infinitely dense singularity. It then inflated, expanded and cooled, changing it to the size and the temperature of our current universe.