Despite the strong evidence supporting the Big Bang Theory, several questions remain unanswered:
Nature of Dark Matter: Although it makes up about 27% of the universe's mass-energy content, the true nature of dark matter remains unknown. Cause of Inflation: The exact mechanism that drove the rapid inflationary period immediately after the Big Bang is still a mystery. Quantum Gravity: A theory that successfully unifies general relativity and quantum mechanics is yet to be developed. Initial Singularity: Understanding the state of the universe at the exact moment of the Big Bang is still beyond our current scientific capabilities.