Les limites de l’univers observable : jusqu’où peut-on voir
IN BRIEF Observable universe: The visible part of the universe, limited by the cosmic horizon. Size of the universe: Estimated to be at least 96 billion light-years. Cosmic horizon: Boundary beyond which the universe remains opaque. Cosmic microwave background: Light from the Big Bang visible at about 13.8 billion light-years. Expansion of the universe: The … Read more