5. How Λ Might Prevent a ‘Big Crunch’
One of the most intriguing consequences of a positive cosmological constant is its potential to save the universe from a catastrophic fate.
Without Λ, gravity might eventually halt the expansion and pull everything back, leading to a dramatic “Big Crunch.”
However, as outlined by Space.com, a sufficiently large Λ counteracts gravity’s pull, ensuring that galaxies continue to drift apart.
This cosmic repulsion helps prevent a universal collapse, offering a possible safeguard against total annihilation.