According to Nature, Takahiro Sumi and his team of researchers have identified about a dozen lonely planets. They are large planets, some the size of Jupiter, which apparently do not orbit around any star.

According to the researchers, these solitary planets initially revolved around a star, but for unknown reasons they left their orbits and set off on their way to nowhere.

This finding raises many unanswered questions. At the moment only a dozen solitary planets have been discovered, but they can be millions, since the portion of the sky studied has been very small.