Episode Details

In today's image, we see the gravitational lens known as the Einstein Cross for its distinctive pattern which occurs because a distant quasar is imaged multiple times as its light passes through the gravitational field of the intervening galaxy.

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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