This year, the autumnal equinox in the Northern Hemisphere falls on Monday, Sept. 22. If you want to be extra specific and mark it on your calendar, mark it for 11:19 a.m. PT. The meaning of equinox ...

On Monday, Sept. 22, day and night will be nearly equal in length as Earth's axis is side-on to the sun, officially beginning ...

Fall equinox 2025 arrives on Monday, September 22. Find out why the first day of autumn still features a little more daylight ...

The equinox occurs at the same moment wherever you are on Earth but what is it and when does it take place? Chris Fawkes has all the answers.

We’ve already had the end of meteorological summer, which was on August 31. The seasons are divided meteorologically into ...

Meteorological seasons are defined by the weather. They break down the year into three-month seasons based on annual ...

Residents of Butler County and those in surrounding areas are gearing up for the arrival of the first day of fall, officially ...

Forecasters warn of possible G2 geomagnetic storms as a colossal coronal hole sends solar wind racing our way.

To study the sun, scientists use a specialized telescope called a coronagraph. This instrument mimics a solar eclipse by ...

If you have been feeling sometimes that the days are shorter from time to time, then you would be right, and scientists now ...

They worry further research will detract from emissions reductions and have made the case as to why the five most considered ...