Which part of the electromagnetic spectrum generally gives us our best views of stars forming in dusty clouds?

We can see stars forming in dusty clouds because of the infrared portion of the electromagnetic spectrum. Infrared waves pass through dust in outer space more easily than visible light. Interstellar dust absorbs visible light, a phenomena known as dust extinction.

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.