In today's image, we see the Triffid Nebula, also known as M20. The three dust lanes across the center of the nebula give it its name. In this we are seeing a region off star formation with the red glow of gas due to emission from hydrogen atoms and the blue of the reflection of light off dust particles around young stars.

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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 below the image to select the photo corresponding to the date of this podcast.

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