What is Perihelion? In the vast expanse of space, celestial bodies follow elliptical orbits around stars, with one point being closer to the star—known as the perihelion. This is the term used to ...

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 term "perihelion" describes the point in an astronomical body's orbit where it is nearest to the sun. Derived from the ...

Most places on Earth have seasons because our planet is on a tilt as it orbits the sun. But our star also has its own version of seasons that affect life on Earth—and new astronomical research is ...

Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's ...

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 ...

Did you know that there are actually two different sets of seasons, and thus two different winters, every year?

Earth will reach perihelion at 09:00 Universal Time on Saturday, January 4, 2025, the closest point to the sun in its annual, slightly elliptical orbit. The word comes from the Greek words peri (near) ...

Earth's orbit is an ellipse, not a perfect circle. Earth's distance from the Sun varies by about 3 million miles throughout the year. Earth's orbit's semimajor axis is approximately 93 million miles.

The fall equinox is a significant event in any tipped planet's life. Seasons are caused by a planet's tilted axis. Those which orbit the sun standing nearly straight up and down with little to no ...

Assistant Professor of Geography and the Environment, University of Richmond With its long days just itching to be spent by water doing nothing, summer really can be an enchanting season. As Jenny Han ...