big bang
US /ˈbɪɡ ˈbæŋ/
UK /ˈbɪɡ ˈbæŋ/
1.
Big Bang
the rapid expansion of matter from a state of extremely high density and temperature that according to current cosmological theories marked the origin of the universe
:
•
The Big Bang theory explains the origin of the universe.
La teoria del Big Bang spiega l'origine dell'universo.
•
Scientists continue to gather evidence supporting the Big Bang model.
Gli scienziati continuano a raccogliere prove a sostegno del modello del Big Bang.