NASA’s Astronomy Picture of the Day

This illustration depicts a white dwarf whose spectrum predicts a green appearance to human eyes. Its dense, sodium-rich atmosphere changes the balance of escaping light, revealing an unusual exception to familiar stellar colors. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select t

Deep imaging around the Ghosts of Cassiopeia reveals three faint oxygen-emitting structures. Their possible origins show the difference between discovering an object and establishing what powers it. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo corresponding to the d

A partial rainbow and a golden fan of anticrepuscular rays make sunlight seem to originate from the wrong side of the sky. Raindrops, cloud shadows, and perspective explain why the real Sun is behind the camera. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo correspon

The Treble Clef's looping radio structure sits within hot, X-ray-emitting gas in a merging galaxy cluster. Combined observations suggest that the collision revived particles left behind by an earlier black-hole outburst. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo

The Eagle Nebula's Pillars of Creation become an audible experience as telescope image data are translated into sound. Listen to a complete sonification, then explore how the mapping makes astronomical structures accessible in another way. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image t

Rosetta's close-up view of Comet 67P reveals a rugged nucleus releasing jets of material near the Sun. Following the comet over time showed scientists how its landscape changes and what its escaping gas and dust contain. My podcasts are available in video form through this YouTube Channel. This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link above the image to select the photo