expression, noun
ultimate fate of the universe; end of the universe
Astronomical term referring to the final state or destiny of the universe, including scenarios like heat death, Big Crunch, or Big Rip.
宇宙の終焉についての理論はいくつかある。
There are several theories about the ultimate fate of the universe.
この本は宇宙の終焉をわかりやすく説明している。
This book explains the end of the universe in an easy-to-understand way.
Compound of 宇宙 (uchū, 'universe') + の (no, possessive particle) + 終焉 (shūen, 'demise, end'). The term is a straightforward descriptive phrase used in astronomy.