![]() ![]() It is summer in June in the Northern Hemisphere because the Sun's rays hit that part of Earth more directly than at any other time of the year. Sometimes it is the North Pole tilting toward the Sun (around June) and sometimes it is the South Pole tilting toward the Sun (around December). So, throughout the year, different parts of Earth get the Sun’s direct rays. Most scientists think that that rubble, in time, became our Moon.Īs Earth orbits the Sun, its tilted axis always points in the same direction. That big hit sent a huge amount of dust and rubble into orbit. It also blasted a big hole in the surface. So instead of rotating with its axis straight up and down, it leans over a bit.īy the way, that big thing that hit Earth is called Theia. Long, long ago, when Earth was young, it is thought that something big hit Earth and knocked it off-kilter. That is why we have day and night, and why every part of Earth's surface gets some of each.Įarth has seasons because its axis doesn't stand up straight. There is a different reason for Earth's seasons.Įarth's axis is an imaginary pole going right through the center of Earth from "top" to "bottom." Earth spins around this pole, making one complete turn each day. However, in the Northern Hemisphere, we are having winter when Earth is closest to the Sun and summer when it is farthest away! Compared with how far away the Sun is, this change in Earth's distance throughout the year does not make much difference to our weather. ![]() During part of the year, Earth is closer to the Sun than at other times. It is true that Earth's orbit is not a perfect circle. And, likewise, they think Earth is farthest from the Sun in the winter.Īlthough this idea makes sense, it is incorrect. Many people believe that Earth is closer to the Sun in the summer and that is why it is hotter. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere. ![]() So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. Throughout the year, different parts of Earth receive the Sun's most direct rays. ![]()
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