Discovery of a large population of free-floating planets roaming the Milky Way

The first free-floating planets were discovered at the turn of the century, but the lack of large samples prevents us from better understanding their origin and properties. Are they born orphans of planetary systems, or are they expelled from their place of birth in their childhood? I will present the largest homogeneous sample of free-floating planets to date and discuss how it can be used to shed light on their origin.

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