Astronomers now believe that every star in the galaxy has a planet, and they speculate that up to one fifth of them have an Earth-like planet that might be able to harbor life, but we haven't seen any of them.
Astronomi vjeruju da svaka zvijezda u galaksiji ima planet, i procjenjuju da petina njih ima planet sličan Zemlji koji bi mogao podržati život, ali nismo vidjeli nijedan od njih.