The loneliest planet: Riddle of world found floating through space without a star "An international team of astronomers has discovered a large planet floating freely through space with no star to orbit. Planets traditionally travel in a uniform, singular direction, around a star. However, the free-floating planet, named PSO J318.5-22, has been found without a host. Its movement isn't structured, scientists do not understand how it formed and they are baffled by what - if anything - controls it." Click on the link to read the whole article.