Look to the skies on Sept. 7-8 to witness Earth's shadow roll over the lunar disk, giving rise to a deep red "blood moon." Here's what to expect during each phase of this week's total lunar eclipse.

A total lunar eclipse occurs when Earth passes between the moon and sun, temporarily bathing the entire lunar disk in its shadow. This in turn causes our natural satellite to glow a deep red, as the scattered light from every sunrise and sunset on Earth is bent onto the lunar disk.

Several distinct phases will be on display during the Sept. 7-8 total lunar eclipse, which will be visible in its entirety across swathes of Asia, western Australia and eastern Europe, while other countries like Spain and Norway will witness only a partial eclipse.

You can safely view a lunar eclipse through the g

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