What is Dark Matter?

Dark matter is a hypothetical form of matter that is thought to account for approximately 27% of the mass and energy in the observable universe. It is believed to be non-baryonic in nature, meaning it is not composed of the same particles as ordinary matter, such as protons, neutrons, and electrons.

How is Dark Matter Detected?

Dark matter is challenging to detect directly because it does not emit, absorb, or reflect light. Scientists use indirect methods to study dark matter, including gravitational lensing, where the gravitational pull of dark matter bends the light from distant objects, and observations of the cosmic microwave background radiation.

Significance of Dark Matter

Understanding dark matter is crucial for understanding the structure and evolution of the universe. Its gravitational effects hold galaxies together and influence the large-scale structure of the cosmos. By studying dark matter, scientists hope to unlock the secrets of the universe's formation and composition.

Study Guide

To better understand dark matter, consider the following points for further exploration:

Learn about the history of dark matter research and the scientists who have contributed to our understanding of this enigmatic substance.
Explore the methods used to detect and study dark matter, such as gravitational lensing, particle accelerators, and astronomical observations.
Investigate the role of dark matter in the formation and behavior of galaxies, galaxy clusters, and the large-scale structure of the universe.
Examine current theories and hypotheses about the nature of dark matter, including the search for dark matter particles and alternative explanations for gravitational anomalies.