The two newly-found-earth-sized planets, called Kepler-20e and Kepler-20f might hold life. The scientists are not so sure yet because their instruments are not sensitive enough to detect them. One of them circles its sun in just 6 Earth days, and other does in 19. Scientists believe that there might be others like them exist. The reason that the scientists expect that the planets might hold life because the temperature was estimated at an average of about 30’c- perfectly for liquid water. Only 20 years, people have been able to look out at the universe and realize that other planets exist in the universe too. Scientists estimate that we might find other planets could hold life or could be habitable which we can settle our alien-planet colony.