Perimeter Institute for Theoretical Physics · How important is the cosmological constant?

1. 1. The cosmological constant is profoundly fundamental and crucial to the universe's existence as we understand it today.
2. 2. Even a relatively small alteration to the cosmological constant, such as a change by a factor of 10, would have catastrophic consequences for cosmic structure.
3. 3. Galaxies would be unable to form in a universe with an altered cosmological constant, as expansive forces would rip them apart before they could coalesce.
4. 4. Without the formation of galaxies and stars, life as we know it, including humanity, would not have been able to emerge.
5. 5. The cosmological constant represents an incredibly powerful force or energy density that, if too large, can literally tear cosmic structures apart.