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 ...

SYRACUSE, N.Y. - The Earth has seasons due to the tilt of Earth's axis, which is a line through the south to north pole. The Earth's axis tilts towards and away from the Sun's rays as it travels in a ...

The annual clock of the seasons—winter, spring, summer, autumn—is often taken as a given. But our new study in Nature, using a new approach for observing seasonal growth cycles from satellites, shows ...

Spring, summer, fall and winter—the seasons on Earth change every few months, around the same time every year. It's easy to take this cycle for granted here on Earth, but not every planet has a ...

COLUMBIA, S.C. — As the year unfolds, we experience the distinct changes in weather that mark the passage of time: the freshness of Spring, the warmth of Summer, the crispness of Autumn, and the chill ...

Earth's regular seasons are primarily due to its axial tilt (obliquity) of approximately 23 degrees, causing variations in sunlight intensity across the hemispheres throughout its orbit. This ...

"These differences in timing can have surprising ecological, evolutionary and even economic consequences." Our current ...

In the United States, the U.S. Geological Survey (USGS) maintains a set of annual phenological metrics that documents the life cycles and impacts of climate change using satellite data, which also ...

This article was originally featured on The Conversation. Spring, summer, fall and winter–the seasons on Earth change every few months, around the same time every year. It’s easy to take this cycle ...