Did we have enough of life on Earth?
from Earth. You might even say that our solar system is unusual since it does not have a planet with a mass between that of Earth and Neptune.detect and study
than Earth-sized planets. There are two methods astronomers use to detect exoplanets. One looks for the gravitational effect of a planet on its parent star and the other looks for brief dimming of a star’s light as the planet passes in front of it. Both of these detection methods are easier with a bigger planet..” Leibniz’s argument was meant to address the question of why evil exists, but modern astrobiologists have explored a similar question by asking what makes a planet hospitable to life.
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