A massive object can distort the light of more distant objects behind it through the phenomenon that we call GRAVITATIONAL LENSING.
2. WIMPS are defined as subatomic particles that have more mass than neutrinos but do not interact with light.
3. The ROTATION CURVES of spiral galaxies provide strong evidence for the existence of dark matter.
4. Matter made from atoms, with nuclei consisting of protons and neutrons, represents what we call ORDINARY (OR BARYONIC) matter.
5. Models show that the LARGE-SCALE STRUCTURE of the universe is better-explained when we include the effects of dark matter along with the effects of luminous matter.
6. Matter consisting of particles that differ from those found in atoms is generally referred to as EXOTIC (OR NONBARYONIC) matter.
