Why do the northern lights have different colors? The color of the aurora depends on which gas is being excited by the electrons and on how much energy is being exchanged, NASA sa ...

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

The vernal equinox heralds the arrival of spring in the Northern Hemisphere (finally). But have you heard the myth about balancing an egg on its end?

Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the sun is on the same plane as the equator. After the vernal equinox in March, ...

The Northern Hemisphere is welcoming Spring 2025 on March 20, also known as the vernal equinox. The jump into spring has come with celebrations and traditions of rebirth around the world for ...

Thursday marks the vernal equinox, or the first day of spring, in the northern hemisphere — even if the weather in Michigan doesn't seem particularly "springy" this week. While meteorological ...

Today marks the first day of spring 2025. The vernal equinox marks the start of spring every March. The autumnal equinox marks the start of fall every September. An equinox occurs, "two times of ...

Spring is almost here — officially, at least. The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

The first day of spring represents the vernal equinox in the Northern Hemisphere, an astronomical event that occurs when the sun aligns with the Earth's equator. On the contrary, in the Southern ...

Did you know both the astronomical first day of spring and Easter Sunday are tied to the spring equinox? How they relate, ...