Why people get happy when there is water on another planet, isn’t it possible that aliens could live without water?
We can divide up all possible life into two categories: life that needs water, and life that does not need water. We know the first group exists, because we, and all other life on earth, are part of that group. The existence of the second group is pure speculation.
The Short Answer
We can divide up all possible life into two categories: life that needs water, and life that does not need water. We know the first group exists, because we, and all other life on earth, are part of that group. The existence of the second group is pure speculation. So while no one denies the possibility of the second group, it makes a whole lot of sense to focus on looking for the type that we know CAN exist.
Analysis
Key Concepts: Life, group, water
This explanation focuses on life, group, water and spans 79 words across 4 sentences. The depth is typical for Space & Astronomy questions (category average: 68 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “We can divide up all possible life into two categories: life that needs water, and life that does not need water.” It then elaborates by explaining the root cause, ultimately building toward a complete picture across 4 connected points.
How This Compares in Space & Astronomy
Ranked #167 of 500 Space & Astronomy questions by answer depth (top 34%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why why people get happy when there is water on another planet, isn't it possible that aliens could live without water?
We can divide up all possible life into two categories: life that needs water, and life that does not need water. We know the first group exists, because we, and all other life on earth, are part of that group. The existence of the second group is…
How detailed is this explanation compared to similar Space & Astronomy questions?
This is an above-average answer at 79 words, ranked #167 of 500 Space & Astronomy questions by depth. The key concepts covered are life, group, water.
What approach does this answer take to explain why people get happy when there is water on another planet, ?
The explanation uses root cause analysis across 79 words. It is categorized under Space & Astronomy and addresses the question through 1 analytical lens.