The universe is an immense expanse containing everything we know, from galaxies and stars to planets and nebulae. Scientists study it through various disciplines like astronomy and cosmology to understand its origin, evolution, and composition. The universe is believed to have originated around 13.8 billion years ago in an event called the Big Bang, and it continues to expand today. It's a fascinating subject that constantly reveals new mysteries and wonders.
By : Kheireddine ranine khadidja groupe :09