The earth is one of the most important planets in the solar system, but there is only life on the earth in the solar system. Do you know why?

The earth is one of the most important planets in the solar system, but there is only life on the earth in the solar system. Do you know why?

The earth is one of the most important planets in the solar system, but there is only life on the earth in the solar system. Do you know why?
reason:
1、 The earth's own conditions:
1. The distance between the sun and the earth is moderate and the temperature is suitable;
2. The volume and mass are moderate, and there is an atmosphere suitable for biological respiration;
3. There is liquid water in the formation of primitive ocean;
2、 The cosmic environment of the earth:
1. Stable light conditions;
2. Safe orbital space