The autumnal equinox is upon us Sunday, and with it a shift to shorter days, longer nights and the astronomical start of fall in the Northern Hemisphere. Equinoxes occur when Earth reaches a point in ...

The Fall Equinox marks the official start of autumn in the Northern Hemisphere, representing a key shift in Earth’s relationship with the Sun. While it is often linked to equal day and night, the ...

The autumnal equinox doesn't just mark a seasonal shift, but also increases the chances of dazzling auroras thanks to the Earth's orientation and magnetic field The National Oceanic and Atmospheric ...

SAN FRANCISCO (KGO) -- The September equinox is here! The word "equinox" is Latin for "equal night," when all parts of the Earth experience close to 12 hours of daylight and 12 hours of darkness. The ...

After another brutally hot summer, cooler, shorter days — and pumpkins — are on our doorstep. The autumnal equinox arrived Sunday, marking the end of astronomical summer and the first day of fall in ...

March 2024 may be the best month in the best year to see the Northern Lights, aka aurora borealis. That's because the sun is hyperactive, and the equinox can create holes in Earth's magnetic field.

As the Earth travels around the sun, it does so at an angle. For most of the year, the Earth’s axis is tilted either toward or away from the sun. That means the sun’s warmth and light fall unequally ...

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 what ...