Proper noun
Big Freeze
(astronomy) A theoretical end of the universe in which the expansion of the universe leads to its cooling until the temperature is too cold to support life.
Synonym: Big Chill
The fundraising phenomenon called FightMND was inspired by former Melbourne coach and Essendon player Neale Daniher, and the Big Freeze has been a feature of the past five Queen's Birthday matches between Collingwood and Melbourne. Source: Internet