The Wonders of Our Universe
The universe is everything we can touch, feel, sense, measure, or detect. It includes all of space and time, and everything that exists within it — stars, planets, galaxies, black holes, dark matter, and even the smallest particles. Our universe began about 13.8 billion years ago with a massive explosion known as the Big Bang. Since then, it has been expanding continuously. Galaxies are moving away from each other, and space itself is stretching. One of the most fascinating aspects…