Dimension Science

DARK MATTER I ntroduction:       D utch astronomer Jacobus Kapteyn first suggested the existence of dark matter in 1922 while studying stellar velocities  .                              S wiss astrophysicist Fritz Zwicky  inferred the existence of dark matter  during his work on galactic clusters in 1933.             He is also best in other works like Neutron stars ,Gravitational lensing  ,Supernovae...                                                                                            T he late American astronomer Vera Rubin teamed up with the instrument  maker Kent Ford in the 1960s and 1970s ,and together  they used their new spectrograph to measure the velocity curves of spiral galaxies ,they found that most of them contain six times as much dark matter as visible matter.                                                                                                                    NEXT TO DARK ENERGY ,THE SECOND LARGEST    COMPONENT OF T