Why is it controversial to say that the Earth could be the only planet in the universe with life?
What are the chances that earth is the only habitable planet in the universe?
If there are 50 sextillion habitable Earth-like planets in the universe, is it possible that there are humans in other planets in the universe? How many planets in our solar system would be habitable by humans? If we found a habitable planet but it already had sentient inhabitant, would we try to conquer it? Is there life on other planets besides earth? Is there other planet like this world with humans? Would there be life on other planets in our solar system? Is the earth the only planet with water? Is there any possibility, that human beings could live on another planet? If yes, how much time will it take to take all humans on that planet? Wouldn't any other planet be completely inhospitable to our biome. Aren't we confined to earth because we are made of earth? Is it possible that there is life in other planets? Is any planet have living things? Do we know if there is life on other planets? Is it possible that there are more than one earth in universe as it is? Is there any other life existing except on Earth? When Sun start expanding and starts pulling the planets towards it,will there be a chance for other planets like Saturn or Uranus to become habitable? Which of the 7 planets (that's not including earth) are we least likely to get to? Is there life beyond Earth in our Solar System? Is there possibility of life on other planets? Has life been found on any other planet? Is there no life on other planets? What are the chances of finding intelligent life on other planets? How important would be the finding of another planet in our solar system? What is the biggest planet possible? Is a planet entirely made of only liquid possible? Does extra terrestrial inteligent life visit earth? Is there life on other planets? Is the Earth properly earthed? What if Earth were the biggest planet? Is it possible to sustain life in other planets? Will the Earth ever die?