What does "Standard Model Of Cosmology" mean?
Table of Contents
The Standard Model of Cosmology is a widely accepted explanation of how the universe works and how it has changed over time. It suggests that the universe began with a big expansion known as the Big Bang, which happened about 13.8 billion years ago.
Key Components
Cosmic Inflation: Shortly after the Big Bang, the universe experienced a rapid expansion called inflation. This rapid growth helped to shape the universe's large-scale structure.
Dark Matter: A large part of the universe is made up of dark matter, which does not emit light or energy. It acts like glue, helping galaxies and other structures to form and stay together.
Dark Energy: This is a mysterious force that seems to be causing the universe to expand faster over time. It counteracts gravity, allowing the universe to grow.
Structure Formation: The universe evolved from tiny fluctuations in density, which grew over millions of years into galaxies, galaxy clusters, and other large formations we see today. Gravity played a key role in this process.
Cosmic Microwave Background: This is the afterglow of the Big Bang, providing important clues about the early universe and its development.
Observational Evidence
The Standard Model is supported by various observations, including:
- Measurements of galaxy distances and velocities.
- Studies of the cosmic microwave background radiation.
- Surveys of galaxy clusters and their distribution.
Overall, the Standard Model of Cosmology provides a framework for understanding the universe's past and predicting its future.