Big Bang
The Mystery of Second Zero: How Were Space, Time, and the Universe Created? Around 13.8 billion years ago, the universe did not begin with a bomb explosion in an empty space, but rather from a super-dense, extremely hot, and dimensionless point called a singularity. The moment we call the Big Bang is the event where the fabric of space and time was created and expanded at an incredibly rapid pace. Space and time are not empty containers, but a single, flexible four-dimensional fabric. Before this moment, time itself did not exist, so scientifically speaking, there is no such thing as "before" the Big Bang. As space began to expand, its unimaginably hot temperature gradually cooled down. In the first few minutes, this pure energy formed the simplest atomic nuclei in the universe, namely Hydrogen and Helium, which hundreds of millions of years later were pulled together by gravity to condense into stars, galaxies, and create the building blocks of life. When scientists trace ...