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Why is the presence of complex organic molecules discovered on Comet 67P and other objects not enough evidence to definitively say that life exists beyond Earth?

Sarah Jenkins
Sarah Jenkins
Lead Content Curator · Mar 5, 2026 · Updated Apr 13, 2026

Complex organic molecules can form and exist without life. By complex, we are talking simple amino acids, nitrogenous bases, super-simple polycarbons. These are not the same as the long polymers you would get from carbon-based life.

36
Words

1 min
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#360
of 500 in Space & Astronomy

-47%
vs Category Avg

The Short Answer

Complex organic molecules can form and exist without life. By complex, we are talking simple amino acids, nitrogenous bases, super-simple polycarbons. These are not the same as the long polymers you would get from carbon-based life.

Analysis

Key Concepts: Complex, life, organic

This explanation focuses on complex, life, organic and spans 36 words across 3 sentences. At 47% below the average Space & Astronomy explanation (68 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.

What This Answer Covers

The explanation opens with: “Complex organic molecules can form and exist without life.” It then elaboratesultimately building toward a complete picture across 3 connected points.

How This Compares in Space & Astronomy

Ranked #360 of 500 Space & Astronomy questions by answer depth (top 73%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.

Frequently Asked Questions

Is there a simple explanation for why the presence of complex organic molecules discovered on comet 67p and other objects not enough evidence to definitively say that life exists beyond earth?

Complex organic molecules can form and exist without life. By complex, we are talking simple amino acids, nitrogenous bases, super-simple polycarbons. These are not the same as the long polymers you would get from carbon-based life.

How detailed is this explanation compared to similar Space & Astronomy questions?

This is a focused answer at 36 words, ranked #360 of 500 Space & Astronomy questions by depth. The key concepts covered are complex, life, organic.

What approach does this answer take to explain the presence of complex organic molecules discovered on come?

The explanation uses direct explanation across 36 words. It is categorized under Space & Astronomy and addresses the question through 1 analytical lens.