Jet streams change position, location, and strength depending on the season. In the winter, areas in the Northern Hemisphere may get colder than in other periods as the jet stream dips "lower," bringing cold air in from the polar regions.
The jet stream shifts north and south seasonally; because there is less cold air, it retreats northward into Canada during the northern hemisphere's summer
A sky map is created by astronomers to identify, name, and plot celestial objects it is a map of the sky made by dividing the celestial sphere into 88 different areas.
