Plot twist: scientists now think dark energyβ€”the force making our universe expandβ€”might be losing steam. Instead of expanding forever, the universe could actually stop, reverse, and collapse in a "Big Crunch" way sooner than we thought. The new theory mixes mysterious particles called axions with a negative cosmological constant (yep, that’s a thing). If this holds up, it could totally flip our understanding of how the universe ends. Mind. Blown. #Science #DarkEnergy #BigCrunch