Why do the northern lights have different colors? The color of the aurora depends on which gas is being excited by the ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The Northern Hemisphere is welcoming Spring 2025 on March 20, also known as the vernal equinox. The jump into spring has come ...

Ready for the first day of spring? What we know about the 2025 spring equinox, the autumnal equinox, summer and winter ...

The spring equinox is a "vital part" of the astronomical calendar as it signals the transition from winter to spring ...

The start of the astronomical season begins on the date of the spring equinox. This falls on 20 March in 2025, and will last ...

Spring officially begins in the Northern Hemisphere on March 20 with the vernal equinox as the entire world experiences an ...

The spring equinox will occur at 5:01 a.m. EDT on Thursday. Here's what to know about the start of the spring season.