Did you see the blue moon? Did it look the the moon above? Well, then it might have been something you ate. A blue moon is a second full moon in the same calendar month, not something based on its color. The moon last night actually looked like the one below and was quite spectacular. Yes, it was a touch closer to earth than usual but that really wasn't noticeable by eye. People may have looked early in the evening and felt like it looked bigger because the media was reporting on it, but the difference from the last full moon would be very subtle.