I have always had thoughts about extraterrestrial life and I wonder why researchers largely compare the conditions for existence of life to that on the Earth?
Is it impossible that on a remote planet, completely different elements exist (like Hydrogen and Carbon on the Earth) that allow the life there to withstand temperatures that we have not ever measured and the molecular structures have a composition that we have not ever imagined?
For example, think about a planet that has conditions that are not even close to hot and cold, atmosphere that does not have pressure and there is no water, air, ice etc. that we know about. But there is an atmosphere made up of something else that supports life made up of completely different elements (mentioned above) under those circumstances?
Am I correct to think in this way?