Solar Facts

June 20, 2017

Happy June Solstice 2017! Oh and the Eclipse!

Happy June Solstice 2017! The beginning of summer for the northern hemisphere and winter for the southern hemisphere. Oh, and it is two months until the August 21, 2017 total solar eclipse! The June Solstice comes on June 21, 2017 […]
March 20, 2017

Happy March Equinox 2017

The March equinox for 2017 begins on March 20th at 10:29 UT (6:29 am EDT.) The Spring or Vernal Equinox in the Northern Hemisphere is the Fall or Autumnal Equinox in the Southern Hemisphere and vice versa. But what is the equinox […]
December 20, 2016

Happy December 2016 Solstice!

The December solstice for 2016 begins on Dec. 21st at 10:44 UT (5:44 am EST). It is called the winter solstice for the Northern Hemisphere and the summer solstice for the Southern Hemisphere. But what is the solstice exactly? There […]
September 22, 2016

Happy September Equinox 2016

The September equinox for 2016 begins on September 22th at 14:21 UT (10:21 am EDT.) The September Equinox is the Fall or Autumnal Equinox in the Northern Hemisphere and the Spring or Vernal Equinox in the Southern Hemisphere. But what is the […]
June 20, 2016

A Rare Full Moon June Solstice for 2016!

For 2016, we get the special treat of a full moon on the June Solstice. This last happened in 1967 and will not happen again until 2062. The June solstice for 2016 begins on June 20th at 22:34 UT (6:34 pm EDT.) […]
March 20, 2016

Happy Spring Equinox 2016

The March equinox for 2016 begins on March 20th at 04:30 UT (12:30 am EDT.) The Spring or Vernal Equinox in the Northern Hemisphere is the Fall or Autumnal Equinox in the Southern Hemisphere and vice versa. But what is the equinox […]
February 5, 2016
Sun and Earth Comparison

Our Star – An Introduction to the Sun

Our solar system is composed of the Sun and all things which orbit around it: the Earth, the other eight planets, asteroids, and comets. The Sun is 150 million kilometers (93 million miles) away from the Earth (this distance varies […]
November 6, 2015

How Big is the Sun?

The Sun is really really big! It is difficult to get a true feel for how big it is because nothing in our daily life comes even close. But we can use objects that we are familiar with to provide […]
October 5, 2015

Do solar flares cause earthquakes?

We have been getting a number of questions and comments lately regarding the possible relationship between solar activity and geological activity, such as earthquakes and volcanoes, so I have decided to look into the matter in more detail. First let […]
August 2, 2015
Layers of the Sun

Layers of the Sun

The Sun, as shown by the illustration to the left, can be divided into six layers. From the center out, the layers of the Sun are as follows: the solar interior composed of the core (which occupies the innermost quarter […]
July 6, 2015

Happy Aphelion 2015!

Earth reached its farthest point from the sun July 6 at 3:41 p.m. EDT or July 6 at 19:41 in Universal Time (UT). This is called aphelion. The distance from the Sun’s center to Earth’s center will be 152,093,481 kilometers or 94,506,507 miles. The […]
June 21, 2015

Happy June Solstice 2015

The June solstice for 2015 begins on June 21st at 16:39 UT (12:39 pm EDT.) It is called the summer solstice for the Northern Hemisphere and the winter solstice for the Southern Hemisphere. But what is the solstice exactly? There are two solstices in […]