The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere. On the equator, the sun will be directly overhead at ...

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, ...

combined with the tilt of the Earth's axis, is what causes seasons. "Seasons are caused by the fact that the Earth is tilted on its axis by 23.5 degrees," according to the NWS. "The tilt's ...

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?

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

They break down the year into three-month seasons based on annual temperature ... For most of the year, the Earth’s axis is tilted either toward or away from the sun. That means the sun ...

For most of the year, the Earth's axis is tilted either toward or away from ... While astronomical seasons depend on how the Earth moves around the sun, meteorological seasons are defined by ...