An animation showcases how the seasons change with Earth's orbit around the sun. Earth's axis tilt causes very specific weather patterns and daylight during the course of a year. Most places ...

The equinox happens when the sun's rays square up with Earth so the day is about as long as night. From then on, the days get shorter, darker, and colder. Here's why. The first day of fall, also ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...

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