We often hear two mind-blowing facts about our universe. Let’s break them down: ⏳ Age • The standard cosmological model (ΛCDM) gives an age of about 13.8 billion years (13.787 ± 0.020 Gyr).  • This comes from measurements of the cosmic microwave background and calculations of cosmic expansion history.  • Some speculative models propose a much older universe (e.g. ~26.7 billion years) but these are not accepted consensus.  🌌 Size (observable universe) • We can only see part of the universe — this region is called the observable universe.  • Its current diameter is estimated at ~93 billion light-years.  • The radius to the “edge” (comoving distance) is ~46.5 billion light-years.  • Why is the observable size so much bigger than 13.8 billion light-years? Because space itself has expanded. Light that started traveling billions of years ago comes from regions now much farther away. #StemAntics #AstronomyFacts #CosmosExplained #UniverseSize #AgeOfTheUniverse #Cosmology #Ast...