This Reuters photograph, taken late last week in D.C., is of last Saturday’s “blue moon.” Blue moons occur when two full moons fall within the same calendar month, a phenomenon which occurs every two-and-a-half years.
This Reuters photograph, taken late last week in D.C., is of last Saturday’s “blue moon.” Blue moons occur when two full moons fall within the same calendar month, a phenomenon which occurs every two-and-a-half years.
