Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the ...

A quirk of planetary positions will make Saturn's 200,000-mile-around rings disappear for one night on March 23. Plan ahead, ...

The spring equinox marks the start of astronomical spring. The date is determined by the Earth's tilt on its axis as it ...

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?

Read Illustration showing how Earth's tilt leads to the Northern and Southern Hemispheres receiving changing amounts of ...

The spring equinox - also known as vernal equinox - marks the first day of spring in the northern hemisphere, according to ...

Most of the time, the Earth and Sun’s magnetic fields are misaligned, leaving our planet’s field less open to the aurora-causing effects of the solar wind. However, towards the equinox, the two fields ...

As the spring equinox approaches, northern lights hunters will scour the skies for breathtaking displays of color.

The Vernal Equinox happens Thursday, March 20. This signals the time when the Northern Hemisphere will begin seeing more ...

The spring equinox occurs every March 19, 20 or 21 in the Northern Hemisphere. Here's what happens during the celestial event ...

The equinox happens twice a year - in March and in September. Wherever you are on the planet, the equinox occurs at the same moment. For those south of the equator, where the seasons are reversed ...