Just 20 years ago, astronomers imagined that planets beyond the Solar System would be more or less like the ones we know: small, rocky worlds like Mercury, Venus, Earth and Mars orbiting relatively ...

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...

New research from the University of St Andrews has found that giant free floating planets have the potential to form their own miniature planetary systems without the need for a star. In findings ...