Dark matter is a hypothetical form of matter that makes up approximately 85% of the total mass of the universe. It does not interact with light or other forms of electromagnetic radiation, making it invisible to traditional telescopes. Its existence is inferred from its gravitational effects on visible matter.
Dark energy is a mysterious force that is thought to make up approximately 70% of the total energy in the universe. Its existence is inferred from the observed accelerating expansion of the universe. Unlike dark matter, dark energy does not interact with matter or radiation, making it even more elusive and difficult to study.
The main difference between dark matter and dark energy is their effects on the universe. Dark matter is responsible for the formation of large-scale structures such as galaxies, while dark energy is thought to be the driving force behind the expansion of the universe. Dark matter interacts with other forms of matter through gravity, while dark energy does not interact with any other known particles.
Scientists study dark matter and dark energy through a variety of methods, including observations of the effects of their gravitational pull on visible matter and the cosmic microwave background radiation. They also use mathematical models and simulations to better understand the properties and behavior of these elusive substances.
Dark matter and dark energy are important because they make up the vast majority of the universe and play a crucial role in its evolution. Understanding their properties and behavior can help us better understand the origins and fate of the universe, as well as the fundamental laws of physics that govern it.