What is a Solar Eclipse, and what causes it?
The moon's orbits the earth once a month or so (28 days), but it wobbles slightly so it is not always going to be in the right position to block the sun every time. Sometimes it is slightly off center, or we are not directly in line under the umbra, center of the shadow, so we only see a partial eclipse where the moon only blocks a portion of the sun.
NEVER look directly at the sun, even during an eclipse. The sun is so bright, even the small bit of corona left exposed is bright enough to burn your retina and blind you, or do severe damage to your eyes.
Click on the button below to find instructions on how to build your own simple pinhole projector so you can safely watch a solar eclipse.