What might likely be affected by the existence of “dark matter”?

What would likely be affected if the dark matter exist is the life expanding of the universe. It is because of the dark matter, it could interfere with how the universe will expand and with their existence, a lot of things will be added on the universe and how it will be viewed and what more could a person discover.

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.