Big Bang Theory Earth Science Definition

The big bang theory is the leading explanation about how the universe began.

Big bang theory earth science definition.

In 1912 vesto slipher measured the first doppler shift of a spiral nebula spiral nebula is the obsolete term for spiral galaxies and soon discovered that almost all such nebulae were receding from earth. At its simplest it talks about the universe as we know it starting with a small singularity then inflating over the. Then between 10 billion to 20 billion years ago the exact timing is not. The big bang theory explains how the universe has evolved over last 13 8 billion years starting from a singularity to its current size.

The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point then expanded and stretched to grow as large as it is right now and it could still be stretching. Different people use the term.