Images & Videos Images 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. HEAPOW Each week the HEASARC scours the archive of X-ray and Gamma Ray observations to bring you new, exciting and beautiful images. Image Archive Images, spectra, and light curves of the many objects we see in our universe. Also, images and information from past and current high-energy astrophysics missions. Videos Video Archive Educational and historical videos, as well as videos about specific missions.