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Full consensus · YesInsufficient evidence
Did the universe begin with a Big Bang ~13.8 billion years ago?
Independent observational pillars — the cosmic microwave background, the abundances of light elements, and the redshift–distance relation — converge tightly on the hot Big Bang…
Cosmology5 citations
Read →Is there life elsewhere in the universe?
No direct observational evidence of extraterrestrial life yet exists. The surrounding work establishes that habitable environments are common, but the question itself remains un…
Astrobiology4 citations
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