What is dark matter?

dark matter is a mysterious form of matter that has gravitational effects on normal matter, but it cannot be observed by other means. While the conventional flows of matter can be detected through their star activity, light scattering, emissions and other means, clouds of dark matter are invisible to the vast majority of our instruments. Yet it accounts for 90% - 99% of space. They found that all galaxies range between ten and a hundred times faster than they should be due to estimates based on the star density observed. Something invisible generated further gravity.

Although it seemed that the initial observations of Zwicky and Smith provide strong evidence for dark matter, not all cosmologists were convinced. Because these galactic clusters were so far, it was hard to measure exactly the independent speeds of each galaxy in a time range of just decades. Stronger evidence came at the age of 70 when scientists like Rubin, Freeman and Peebles began to analyze the curves of the galaxy rotation. The stars in the spiral galaxies, such as our own, moved faster around the galactic core than their observable matter.

Finally, it was found that all galaxies contain halos dark matter that stretches far beyond the boundaries of the galaxy marked with binoculars. These Halos are said to be made up of machos (massive astrophysical compact halo objects) and Wimps (weakly interacting massive particles). Machos is theorized mostly black holes and brown dwarves (burnt stars). They consist of conventional or barryon mass - atoms that we are familiar with, only highly compressed. Wimps is said to be nebaryonic forms of mats, weakly interacting particles that move relativistic speeds. The most likely candidate for Wimpy is neutrino and his cousins.