Why are the conditions for alien life to evolve the same as ours? Why can’t they evolve without water, or extremely far from their sun? Is there a reason for this or is it just because our only example is ourselves?

Question

Idk if to put biology or planetary science so ye.

In: Biology

Answer 1

Carl Sagan had some though on this topic around 1980. [https://www.youtube.com/watch?v=uakLB7Eni2E](https://www.youtube.com/watch?v=uakLB7Eni2E) The life forms in the video are still earth-like but it does encourage thinking out of the box