big bang theory

Translations
теория большого взрыва
The big bang theory explains the origin of the universe.
Теория большого взрыва объясняет происхождение вселенной.
Definitions
The Big Bang Theory is a scientific explanation for the origin of the universe, proposing that it began as an extremely hot and dense point approximately 13.8 billion years ago and has since expanded and cooled, leading to the formation of galaxies, stars, and planets.
Words
big

adjective
большой
bang

noun
взрыв
theory

noun
теория