After a long, cold winter, the vernal equinox heralds the arrival of spring in the Northern Hemisphere. But have you heard the myth about balancing an egg on its end?

The March equinox arrives this month at a time when the Sun is already in its most active phase in years, setting up a seasonal alignment that solar physicists have long associated with stronger ...

The "equinox effect" doubles the chance of auroral activity in March and September, when the fall equinox occurs, scientists say.

CLEVELAND, Ohio — Meteorological spring has already arrived, and with temperatures climbing this week in Northeast Ohio, it ...

For the second time in 2025, an incredible astronomical event is about to change the seasons on Earth. The September equinox is almost upon us, with autumn about to begin in the Northern Hemisphere, ...

The first day of spring in 2026 is March 20. The spring equinox marks the moment the sun crosses the celestial equator, resulting in nearly equal day and night lengths. The date of the spring equinox ...

Most people define the beginning of spring as the spring equinox (also called the vernal equinox, for those of you who like ...

This story was updated to add new information. Spring has sprung, bringing warmer days and blooming flowers. Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere.

The first day of spring occurs on the spring equinox, which is also known as the March equinox or the vernal equinox.

A program about the spring equinox will be front and center at the University of Wyoming Harry C. Vaughan Planetarium during ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere ...

The first day of spring 2026 in the Northern Hemisphere arrives with the equinox on March 20. Here's when and why the seasons change ...