In today's image, we see light echoes of x-rays from the gamma ray burst that was observed a week ago. The echoes were caused by reflection of x-rays off of dust in our Milky Way galaxy as they passed though it on the way to Earth.
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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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