If the sum of the mass and energy density in the universe yields Ω

Name: If the sum of the mass and energy density in the universe yields Ω < 1,then the universe will recollapse in a Big Crunch.
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Question

If the sum of the mass and energy density in the universe yields Ω < 1,then the universe will recollapse in a Big Crunch.

Quizplus · Accepted Answer

This is known as the critical density condition. If Ω < 1, the total density of the universe is less than the critical density required for the universe to eventually stop expanding and collapse in a Big Crunch. Therefore, the universe will eventually collapse under its own gravitational pull.

If the Sum of the Mass and Energy Density in the Universe