Astronomy Picture of the Day (APOD).
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Astronomy Picture of the Day (APOD) is originated, written, coordinated, and edited since 1995 by Robert Nemiroff (MTU) and Jerry Bonnell (UMCP). The APOD archive contains the largest collection of annotated astronomical images on the internet.
jAPOD is a unofficial app of APOD.