Spring is almost here — officially, at least. The vernal equinox arrives on Tuesday, marking the start of the spring season for the Northern Hemisphere. But what does that actually mean? Here's ...

Because Earth moves in an elliptical orbit around the sun, being further away means it travels slower along its orbit. This increases the time it takes to get from the solstice, the beginning of ...

News Nation/World Earth’s fall equinox ushers in astronomical autumn Sept. 21, 2024 Updated Sat., Sept. 21, 2024 at 9:21 p.m. A woman dances as druids, pagans and revellers gather at Stonehenge ...

An equinox occurs when Earth's axis is titled perpendicular to the sun, with every location on the planet receiving roughly equal amounts of sunlight and darkness.

Our long, hot summer is finally coming to an end on Thursday with the autumnal equinox, which marks the beginning of fall in the Northern Hemisphere.

Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it since ancient times.

The Earth’s equator is aligned directly with the Sun on the vernal equinox. @NOAASatellitePA / X Astronomically, an equinox occurs when the sun is directly above the equator. The term combines ...

Here's what to know about the upcoming 2025 summer solstice this week and when it last fell on June 22 — the rarest date for ...

The beginning of fall over the weekend was a welcome sign for many, with the promise of cooler temperatures on the way. However, the autumnal equinox—which occurred on Sunday—can also spell ...

During the Northern Hemisphere’s summer solstice, the upper half of the earth is tilted toward the sun, creating the longest day and shortest night of the year. This solstice falls between June 20 and ...

Explainer on how the autumnal equinox makes it more likely for Earth to be hit with geomagnetic storms.

The equinox is when there is an equal amount of day and night During the equinox, the Earth's axis and its orbit line up so that both hemispheres get an equal amount of sunlight.