In today's image, we see an interstellar comet. This means that we have been able to trace back its orbit and find that it must have come from outside out solar system.
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 below the image to select the photo corresponding to the date of this podcast.
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