Science Blue moon: A cosmic wink at Neil Armstrong memorial service

The blue moon Friday is on the same day of a private memorial service for Neil Armstrong, the first man to walk on the moon. A blue moon occurs when there's a second full moon in one calendar month. It won't happen again until July 2015.

By , Associated Press

REUTERS/Matt Sullivan

There's a rare 'blue moon' on Friday, a fitting wink to Neil Armstrong by the cosmic calendar.