The great news is that the full eclipse will be visible for those of us who live in the western United States. The bad news — we’ll have to be awake at some ungodly hours to enjoy it.
The early stages of the eclipse begin at 11:15 pm Tuesday night. But there won’t be much to see at that time. This is when the moon will move into the outer shadow of the Earth called the penumbra. The penumbra shadow is so light that it won’t be visible to most of us.
At 12:14 a.m. the moon will move into the darker part of the Earth’s shadow, called the umbra, and this is when the viewing starts to get good.
If you are patient, and you have clear skies, you can watch our planet’s shadow spread across the lunar surface.