... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... solar system . ... Observe the Solar System . Astronomy for Kids . ... Celestial odd couple discovered . ... On the other hand, the stars in the newly discovered system have extremely low masses, and thus, low gravitational attraction. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...