Author name: Vivien Scottez

Assistant professor, EPA department Junia Université Catholique de Lille & Institut d'Astrophysique de Paris

Measuring the Universe with Baryon Acoustic Oscillations

Hidden in the large-scale structure of the Universe – the so-called cosmic web, subtle waves provide a priceless view on the cosmos, helping scientists highlight some of the mysteries about its structure, evolution, and its current accelerated expansion governed by dark energy. This phenomenon is known as Baryon Acoustic Oscillations (BAOs). To understand what they are, we must travel back in time to the early Universe! Are you ready?

What is and what could be dark matter?

Dark Matter is not one of the powerful sith lord in the Universe, but is one of the biggest mysteries in astrophysics. It refers to a transparent form of matter that does not interact with light, making it invisible to our telescopes. Nevertheless its presence can be inferred through its gravitational effects on usual visible matter and the large-scale structure of the Universe.

What is and what could be dark energy?

There is no doubt in the science community, the expansion of the universe is accelerating! The reason behind this acceleration is one of the most challenging contemporary puzzles, and this is where the concept of dark energy comes in. Accounting for 68% of the energy in the universe, dark energy is at the same time responsible for the acceleration of the expansion of the universe. However, the crucial question remains: What could dark energy be?

How do we know the Universe is expanding?

The idea of an expanding Universe is one of the most remarkable discoveries in the field of cosmology. It might seem counterintuitive at first, as we usually perceive the world around us as relatively static but it revolutionized our understanding of the cosmos and challenged our perception of the Universe as an unchanging entity. Let’s delve into the fascinating evidence that supports this groundbreaking idea.

Scroll to Top