Have We Found the First Planet Outside the Milky Way?

Planets are small and difficult to spot out in the vast reaches of space, but researchers think they've identified one in another galaxy for the first time. Learn more about M51-ULS-1b in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/first-planet-outside-milky-way-news.htm Learn more about your ad-choices at https://www.iheartpodcastnetwork.com