Question

The _________________________ states that 13.8 billion years ago, the universe suddenly became very hot and condensed. The "Big Bang" was the sudden expansion of space, not an explosion like the name implies.

Answer 1

The Big Bang Theory is a crucial concept in physics which proposes that the universe began from a very hot and dense state 13.8 billion years ago, and has been expanding since. This 'Big Bang' was an expansion of space, not a conventional explosion.

Step-by-step explanation:

The theory mentioned in the question is known as the Big Bang Theory. It proposes that 13.8 billion years ago, the universe, which was initially condensed and homogeneously hot, began to expand rapidly in an event commonly referred to as the 'Big Bang'. It's crucial to note that this Big Bang was not an explosion in the conventional sense as there was no detonation or shock wave spreading out from a central point. Instead, space itself expanded, and the universe grew from a highly dense and hot state, and continues to expand to this day.

This theory is backed by extensive scientific evidence, including the consistent speed of light, the observation of redshift in distant galaxies, and the existence and uniformity of cosmic microwave background radiation.

Learn more about Big Bang Theory