Non-Aqueous Life: The Search for Life Beyond the Comfort of Water

Abstract

This paper explores the concept of life beyond Earth, and beyond the common belief that life can only exist and thrive around liquid water. Recent scientific inquiries suggest that life could be possible in environments that do not contain liquid water. This greatly expands the potential for habitats beyond our planet and the few other planets found within the “Goldilocks zone”. The paper also explores potential solvents for life, such as methane, ammonia, and hydrogen sulfide. In particular, the paper delves into hydrogen sulfide (H2S) as a plausible alternative to water as a solvent for life in the universe, given its similar properties to water and its abundance in the universe. Additionally, the essay challenges the concept of the "Goldilocks zone," suggesting that by replacing the target compound, water, with methane or other chemicals like ammonia or hydrogen sulfide, the Goldilocks zone could expand or contract which greater allows for the possibility of life on planets that are further or closer away from their stars. The search for extraterrestrial life requires an open mind and a willingness to explore alternative possibilities beyond the traditional belief that water is the only solvent capable of supporting life.