Don't miss the solar eclipse on Monday August 21, 2017!
Why is an eclipse so special? This perfect sun-moon-Earth alignment is an extraordinary cosmic coincidence. The sun is 400 times larger than the moon, but it also happens to be 400 times farther away, which to the observer on the ground means they are almost identical in size. The match is so uncanny that on some occasions, the moon is at the farthest point of its slightly elongated orbit and fails to cover the sun fully, leaving a ring of sunlight.
Don't look directly at the sun ~ Instead make a Pinhole Projector by putting one piece of cardboard (or paper plate) on the ground. Poke a tiny, round hole into the other piece of cardboard. With your back facing the sun, raise the cardboard with the hole in above your head and aim the hole at the cardboard on the ground. The hole will project an image of the crescent shape of the eclipse.