While sulfur itself is not necessarily an indication ... astronomers face is the typically faint nature of biosignature ...

Their atmospheric spectra are just too similar when you're ... uninhabitable worlds from potentially habitable ones: sulfur dioxide. Warm, wet worlds like Earth have very little sulfur dioxide ...

Elucidating the photosynthetic mechanism of purple sulfur bacteria living in high-salt, high-alkaline environments. ScienceDaily . Retrieved March 26, 2025 from www.sciencedaily.com / releases ...