Sky watchers are in for a rare triple treat very early Wednesday morning, Jan. 31,2018. A supermoon, blue moon and total lunar eclipse will be on display for early risers.
The 3 lunar occurrences are not unique events by themselves.
A blue moon-- which isn’t really blue-- is a calendar event when two full moons occur in a month, which
happens about every two-and-a-half to three years.