<ul><li>Astronomers have identified sulfur as a potentially crucial indicator in narrowing the search for life on other planets.</li><li>High concentrations of sulfur dioxide in a planet's atmosphere suggest that the planet is likely uninhabitable, eliminating it from further consideration.</li><li>The presence of water vapor in a planet's atmosphere is an important factor in determining the potential for hosting life.</li><li>Sulfur dioxide levels can help exclude rocky planets orbiting red dwarf stars that are dry, hot, and not suitable for life.</li></ul>

What’s That Smell? It’s Sulfur – A New Tool For Finding Alien Life

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