1. Tau Librae is a stellar system located about 445 light-years from Earth. 2. The Phi Persei stellar system is located about 716 light-years from Earth. 3. It has been suggested that it has a triple stellar system . 4. He has also considered the habitability criteria of other stellar systems and planets. 5. Has found two evolutionary sequences of stellar systems : nearly spherical and strongly flattened. 6. This stellar system lies in the nebula IC 1396. 7. This would allow receivers in other stellar systems to estimate when the signals would arrive. 8. We have assumed that each stellar system in evolutions throws off electric corpuscles into space. 9. An uninhabited stellar system containing a planet that can be terraformed is deemed a viscountcy. 10. Upsilon Librae is a double or multiple stellar system located about 195 light-years from Earth.
