What is a Total Solar Eclipse?
To the naked eye, the sky is simply a bowl containing thousands of glowing dots and exactly two luminous disks. The points - stars and planets – have no size because of immense distance. The two disks are the Sun and the Moon.
Which is bigger? This is the amazing thing. The Sun and Moon appear the same size. That’s why the Moon can sometimes fit perfectly over the Sun, blocking it precisely so that we can see the normally invisible geysers of pink nuclear flame shooting up from its edges -- and its eerie glowing atmosphere. This is a total solar eclipse. None of these phenomena are visible during the much more common partial solar eclipse, when the Sun remains blindingly bright and the sky remains daytime-blue.