Tagged: neil arm

There will be a "blue moon" tomorrow night, a fitting wink to Neil Armstrong by the cosmic calendar.

That's the day of a private service for Armstrong, the first man to walk on the moon, who died last Saturday in Ohio at age 82.

A blue moon occurs when there's a second full moon in one calendar month. The lunar cycle is 29.5 days long, so a blue moon is rare.

This will be your last chance to spot the phenomenon until July of 2015.