Whenever you come across a beautiful space photo, other than "wow, beautiful!", have you ever wonder what the photo mean?

Astronomy Picture of the Day is a website provided by NASA and Michigan Technological University. Each day a different image or photograph of our universe is featured, along with a brief explanation written by a professional astronomer.

In this virtual tour, we will browse through selected APOD images featured within the current month, along with some brief explanation, and answer all your questions about them.