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What is Cosmology?

Cosmology is the study of the origin of the universe, how it became what it is today, and how it continues to evolve.

Cosmology Meaning

To uncover whether the universe has underlying order, it is essential to understand how, or if, the universe began. And to believe that the universe has purpose begs some understanding of how it all came to be.

Here you'll find a diverse collection of articles, videos and other resources that elaborate on cosmological models, theories and research for a deeper understanding of how our universe works and what its purpose may be.

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History of Cosmology

Our knowledge and understanding of the universe is ever changing as generations of scientists build on the discoveries of those before them. The articles and videos below dive into a few of these instances.

Formation of the Universe

A scientific understanding of human evolution and psychology helps inform what the purpose of life may be.

Stars, Galaxies and Black Holes

Read, watch and learn about the cosmology of stars, galaxies and black holes.

Exoplanets and Extraterrestrial Life

With an average of over one exoplanet per star in the universe, it seems very possible that there could be life on other plants. 

The James Webb Space Telescope

News and information about the exciting James Webb Space Telescope.

Image credit: NASA

Watch Videos

Videos About Cosmology

Watch experts' latest discoveries and positioning on cosmology to learn more about different cosmological arguments and the science that governs our universe.

Common Cosmology Questions

Answers to frequently asked questions about cosmology

What is the evidence for the Big Bang? Maggie Ciskanik, M.S., MSc. explains evidence for the Big Bang, including Lemaitre/Hubble Expansion, Cosmic Microwave Background Radiation, and Even Distribution of Matter.
What happened before the Big Bang?
What is Dark Matter? Scientists still aren’t sure what Dark Matter is or if it really exists. The existence of dark matter is based on indirect evidence. Read more in Dr. Vera Rubin and Why Dark Matter Matters.
How old is the universe? Astronomers believe the universe is 13.7 years old.
Could there be intelligent life elsewhere in the universe? Are We Alone? In this video a Harvard Astronomer discusses the possibility of extraterrestrial life.
Why is cosmology important? Dr. Karin Öberg explains why cosmology matters in this video.
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