Rogue planet found at Milky Way's center

Astronomers have discovered an object at the center of the Milky Way, dubbed a 'rogue planet,' the size of Saturn. The discovery confirms that large planets can, in rare cases, be ejected from the stellar systems in which they formed, researchers note in a paper published in the journal Science. Experts suggest the planet gained tremendous speed during its last dynamical interaction, leading to its expulsion from its native system. This event expands our understanding of planetary system formation and evolution.

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Such events are considered rare, but observed cases increase models of planet formation.