Spring gets its official start Thursday in the Northern Hemisphere with the arrival of the vernal equinox. But what does that ...

Springtime is right around the corner, as the first day of the season is on Thursday. The first day of spring represents the vernal equinox in the Northern Hemisphere, an astronomical event that ...

In keeping with her pseudo-hippie style, Jackson was dressed in retro-flared blue jeans with a black tank top that showcased her array of tattoos along both arms. The only daughter of the King Of ...

The other equinox is in September and both mark the sun crossing the equator, rather than being at an angle. Day and night are therefore about the same length.

Insolation rises sharply from approximately 50 joules at the poles to 275 joules at the equator. Terrestrial radiation varies less, from 120 joules at the poles to 200 joules at the equator.

The equinox marks the sun crossing the equator, making day and night almost equal in length. The next equinox will take place in September. The warmer temperatures this week are expected to be 4 ...

An equinox is the time of year when day and night are nearly the same length throughout the world. This occurs twice a year, in March and September, when the Sun is directly over the Earth’s equator.