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, ...

It’s currently mid-April in Boston, and the sun angle is similar to what we experience at the end of August. That means we’re ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

The sun's rays fall directly on the equator ... of darkness almost everywhere on the planet. Unable to view our graphics? Click here to see them. Day and night aren't exactly 12 hours on ...

While sunsets on Mars are uniquely moody, NASA 's Curiosity rover has captured a stunning image of a martian sunset, featuring light rays that illuminated a bank of clouds as the sun set over the ...