What does the Big Bang Theory suggest about the universe?

The Big Bang Theory posits that the universe originated from an extremely hot and dense state about 13.8 billion years ago and has been expanding ever since. This expansion began from a singular point, which means all matter and energy were concentrated at an infinitely small scale before the event occurred. As the universe continues to expand, galaxies move away from each other, which is supported by observations such as the redshift of light from distant galaxies. This concept is fundamental to cosmology and helps explain the current structure and distribution of the universe.

In addition to this, the idea that the universe is static and unchanging contradicts the evidence of cosmic expansion, while the notion that it is contracting overlooks the observations that suggest that the universe continues to expand. The idea that the universe will eventually collapse is tied to different theories regarding its ultimate fate but is not a part of what the Big Bang Theory itself suggests about the nature of the universe's expansion.