In today's image, we see a simulation showing the merger of two black holes. This simulation depicts what would have been happening during the first detection of gravitational waves in 2015. As the black holes spiral together, their rapid motion releases gravitation waves that we were able to detect at a distance of 1.3 billion light years.

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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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