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The study of the large-scale structure, history, and future of the universe. Cosmology is about asking and answering questions about the "big picture" - the extent, origin, and fate of everything we know.

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What if cosmological constant was zero?

Physicists always ask why the cosmological constant is not exactly zero! I would ask here, what if cosmological constant was zero? The universe wouldn't expand and matter would exert gravitational for …
Ali Alskeif's user avatar