Dark Matter Essays
5 samples in this category
Dark matter is an incredibly elusive force which is necessary for many modern theories that describe the movement of galaxies and – effectively – all of the major elements of the universe. One of the reasons that dark matter has arisen as a theory is the fact that when we observe certain galaxies, they have much more kinetic energy then the masses in them would suggest, therefore, a separate force must be at play. However, we have not yet been...
An invisible universe, an impossible substance holding the ever expanding universe together on wire thin strings, everything you can see, on Earth or in space, is almost totally dominated by one substance; dark matter. For over 50 years, scientists have been trying to comprehend this massive material that is thought to take up 85% of the almost infinite universe. Today you will be learning about the mysterious and puzzling material that has broken scientist’s basic understandings of physics. The first...
Cosmological observations from the past 50 years show that 85% of the matter content in our Universe is made up of non-luminous matter – commonly known as dark matter(DM). Characterizing the properties of DM is a major open question in physics today. Numerous experiments are underway to directly detect DM. The DEAP-3600 (Dark matter Experiment using Argon Pulse-shape discrimination) collaboration has developed a liquid argon-based detector to measure possible interactions of DM. The DEAP detector is set up 2 km...
Dark Matter accounts for 84% of all the matter in the universe. The remaining 16% is ‘normal’ (also called baryonic) matter, comprised of every single planet, star and galaxy in the visible universe. Dark Matter earned its name because it does not interact at all with the Electromagnetic Force. This means it does not absorb, emit or reflect visible light, gamma rays, ultra-violet rays… etc. Since telescopes rely on some form of electromagnetic radiation to function (see graphic below), they...
As scientists, mathematicians and other incredibly smart people started looking up at the night sky, they wondered – why is the universe of the shape that it is? What gives solar systems and galaxies their form, why don’t they just scatter and fly away? These questions came up as soon as the scientists at NASA started measuring the gravitational impact of all of the objects in our galaxy, and something didn’t quite add up: the total amount of mass and...