The first day of spring (vernal equinox) in the northern hemisphere and the first day of fall (autumnal equinox) in the southern hemisphere takes place on March 20, 2017. On this day, the Sun rises due east and sets due west. It will shine directly on the equator,…
An equinox occurs twice a year, when the tilt of the Earth’s axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth’s equator. The term equinox can also be used in a broader sense, meaning the date when such a
One of the most frequently misunderstood concepts in science is the reason for Earth’s seasons. As we experience the September equinox today—anyone try to balance an egg yet?—we thought we’d offer a space-based view of what’s going on.Around 6 a.m. local
Let’s forget for a while on Japan disaster and pending nuclear crisis, tsunamis and earthquakes, mysterious booms and landcracks, new Gulf oil spill, Libya conflict, supermoon, solar flares and all doom hanging upon us. Let’s welcome spring, vernal equinox!!!March 20,
Sunspots 1164 and 1166 are so large, people are noticing them at sunrise and sunset when the sun is dimmed by clouds and haze. The dark cores of these regions are many times wider than Earth, so they are conspicuous even from a distance of 93 million miles.
