Title: Why do we live on earth? Why can't we live on other planets?? - eNotes.com
Headings: Why do we live on earth?
Why can't we live on other planets??

Astronomy
Why do we live on earth? Why can't we live on other planets??
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The first part of this question has been thoroughly answered. However, the second part comes from an incorrect premise. We can live on other planets. It's just that we need a very large amount of technology and supplies in order to do so. Currently, the cost of this support is too large for us to feasibly establish a colony on another world, and there are no locations we have yet discovered which do not require extensive life support just to get there, let alone to live there. Terraforming is one procedure that might circumvent this. Terraforming is the act of altering a planet's ecosystem in order to be more like Earth.