For flat-earthers — the vocal online community of folks who believe the world is actually flat and science is a conspiracy — the equinox can be tricky to explain. Without axial tilt ...

Here are six images that explain the fall equinox, which occurs September 22 at 10:29 p.m. EDT. 1. Nearly equal daylight in both hemispheres During the fall equinox, the sun can be seen at ...

Fall begins Friday, on the autumnal equinox, when the sun’s direct rays beat down directly over the equator. It’s the halfway point between the longest and shortest days of the year — the ...

Cool, crisp weather is a signature of the fall season, but fall doesn't actually begin until the autumn equinox. When is the fall equinox 2023? This year, the autumn equinox will begin on Saturday ...

Get all the news you need in your inbox each morning. More: As spring equinox nears, look for the northern lights: We explain why At precisely 5:01 a.m. ET on Thursday, the sun's rays fall ...

This week rang in the first official day of spring. At 4:24 p.m. on Monday, March 20, the spring equinox officially began in the Northern Hemisphere. With much anticipation on the heels of a cold ...

As we near the spring equinox, also known as the vernal equinox, on March 20, the Earth's magnetic field and solar wind align, creating an increased chance of seeing the colorful auroras in the ...

The simplest way to explain the date of Easter is that it falls on the first Sunday after the full moon that follows the spring equinox. Because the actual date of the spring equinox can differ by ...