Two free-floating objects have been found orbiting each other for the first time. The find raises questions about how such small objects could form.
Bodies that have the mass of a planet but are not bound to a star are called planetary mass objects, or "[url=http://www.activeboard.com/forum...
Title: Candidate free-floating super-Jupiters in the young sigma Orionis open cluster Authors: G. Bihain, R. Rebolo, M. R. Zapatero Osorio, V. J. S. Béjar, I. Villó-Pérez, A. Díaz-Sánchez, A. Pérez-Garrido, J. A. Caballero, C. A. L. Bailer-Jones, D. Barrado y Navascués, J. Eislöffel, T. Forvei...
Starless planets may be habitable after all Liquid water may survive on free-floating planets that have no star to warm them. If they also support life, they could act as stepping stones to spread life around the galaxy. Gravitational tussles with other planets or passing stars can eject planets fr...