Title: Why is life only possible on Earth? - Quora
Headings: Why is life only possible on Earth?
Why is life only possible on Earth?
Anonymous

Content: the others can hold life we just cant prove they actually have life. Some planets like Pluto have ice and water, their just to far from the sun to have life. some planets have oxygen in their atmosphere but their too close to their sun to provide. Lets take examples from our very own solar sytem. There may be life on Mars. We don't yet know for certain that there isn't. Right now, life as we know it would not survive anywhere except Earth or Mars, and possibly Europa (in our solar system). Life requires liquid water. Europa (one of Jupiters moons) has a muck of mud some hundreds of kilometers below the ice that has water in it, and there might be life there. Equatorial regions of Mars get above freezing for parts of the year, and while the Martian atmosphere is too thin to sustain liquid water on the surface, the pressure is great enough underground, and muddy slurries of landslides from subsurface water have been observed.