Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it since ancient times. A flock of swans fly at sunrise on the first day of ...

During the equinox, the Earth’s axis and its orbit line up so that both hemispheres get an equal amount of sunlight. The word equinox comes from two Latin words meaning equal and night.

On this day, the Earth's axis is not tilted toward ... The myth that you can balance an egg on the vernal equinox is not rooted in science. According to the Astronomical Society of the Pacific ...

The vernal equinox heralds the arrival of spring in the Northern Hemisphere (finally). But have you heard the myth about ...

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

During the equinox, the Earth’s axis and its orbit line up so that both hemispheres ... The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s ...

An equinox occurs when Earth's axis is titled perpendicular to the sun ... poles are at a right angle to the direction of the solar wind's flow, according to Live Science's sister site Space.com.

Astronomically speaking, however, the Earth’s equator is aligned directly with the Sun on the vernal equinox. In 2025, that occurs at 5:01 a.m. EDT on March 20. Astronomical seasons are based on ...