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What is The Age and Fate of the Universe?
The universe is estimated to be 13.8 billion years old, a figure derived from cosmic background radiation. While this gives us a sense of its age, predicting its future is speculative. Experts think the continual expansion of the universe could lead to a “heat death” where stars burn out and galaxies drift apart.
Opposing theory suggests a “big crunch” where the universe collapses back into a singularity. Another possibility is the “big rip,” where the fabric of space-time tears apart. Each scenario is modeled based on the behavior of dark energy, whose nature remains one of the greatest unknowns.
Next: Are there other universes beyond our own?