8/20/2026
Dark Matter · exoplanets

What Can We Actually Find on an Exoplanet? Part 1: The Atmospheric Fingerprint

Filed by Dr. Kai Vega
What Can We Actually Find on an Exoplanet? Part 1: The Atmospheric Fingerprint
If an alien civilization could see Earth only as a single pale blue dot, what could they learn? We start with transit spectroscopy, the biosignature cocktail of oxygen, methane, ozone, and water, and why even the James Webb will struggle to find life.
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Dr. Kai Vega
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What Can We Actually Find on an Exoplanet? Part 1: The Atmospheric Fingerprint — Dark Matter