Currently there is no answer to this question simply because we just don't know. Who knows? Some day we might come to discover that there really is life on another planet or something, otherwise at this point in time we can only either assume there is no life on any other planets or we can assume that there is and we just don't know where exactly.
they dont have an anwer yet
None (intelligent or otherwise) has been positively identified except on Earth.
As far as what we know today, there is no life on any planet anywhere, except the Earth.
At present we know of no life existing anywhere except on Earth. We know Mars was wet and warm in the past and we are looking there to see if there was life an if so any of it has survived. At present we have not find any evidence but can not yet rule it out. We do not believe that life as we know it cold exist on Saturn but we are intrigued with some of the planets moons, particularly Enceladus as these seem to have warm ocean beneath their surfaces where life (as we know it) may be possible. Again we have as yet found no definitive evidence for life but we feel it is worth looking harder.
Life has been found just about anywhere on Earth.
Currently you can find life just about anywhere on Earth.
yes
life
life
No life has been detected except on the planet earth.
Because we live on earth and there is no life anywhere else.
Because our Earth receives just the right amount of heat for the developement of vegetation,human life and animal life.Mars is too cold for any kind of life.That's why no life can thrive on any planet except the Earth.