Most of the rogue planets we’ve found floating in space without stars have been huge, but for the first time astronomers have spotted one about as massive as Earth
Source:
https://www.newscientist.com/article/2256156-an-earth-sized-rogue-planet-is-roaming-the-galaxy-without-a-star/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home