DARK MATTER

BY BLANCA GARCIA AND ELENA LARRAONA

What is dark matter?

• 27% of the universe

• Unidentified type of matter

• Non-baryonic

Characteristics • Doesn't interact with light

• Electromagnetic and gravitational forces

• We can't detect it with our instruments

• We know it is there because of its gravitational effects

• Doesn't produce gamma rays

Dark energy

• Affects universe expansion

• Big but important mystery

• 68% of universe

universe

dark matterdark energynormal mat-ter

Fritz Zwicky • 1st theorist of dark matter• Proposed galaxies harbour

huge quantities of unseen matter

• Coma cluster (1000 identified galaxies moving together)

• "Most unrecognised genius of the twentieth century astronomy"

Vera Rubin

• Andromeda galaxy

• Violation of Newton's Laws of Motion

• Didn't publish her book

• Nobel price

Erik Verlinde

• New theory of gravity

• Emergent gravity which predicts same desviation than invoking dark matter

• Using second Newton's Law

Bibliography • totallyhistory.com/fritz-zwicky

• HTTPS://www.decodedscience.org

• http://www.cfhtlens.org/public/what-dark-matter

• HTTPS://home.cern/about/physics/dark-matter

• HTTPS://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy

• http://www.astronomy.com/news/2016/10/vera-Rubin