1) The vacuum has fluctuations of energy due to virtual particle pairs popping in and out of existence according to the Heisenberg uncertainty principle. However, integrating all the expected energy from these fluctuations results in a vacuum energy that is 120 orders of magnitude greater than observed dark energy driving the expansion of the universe, known as the vacuum catastrophe. 2) The author proposes to solve this by assuming virtual particle pairs can only become real particles contributing to dark energy when they interact with and are separated by photons from the cosmic microwave background. 3) Similar to how Planck solved the ultraviolet catastrophe by quantizing energy transfer, the author develops an equation where most virtual particle separations would occur when their bond energy matches the thermal