Spectroscopy – Detection of Biosignatures: Interpreting Spectral Dips and the Need for Large Telescopes

To the point

Scientists use spectroscopy to identify substances in a planet’s atmosphere by analyzing dips in its light spectrum, but these dips are shallow and require very large telescopes, and a single dip does not prove water or methane but only suggests that another molecule is present, while the material is an educational NASA resource for 9th grade and up with interactive elements and a related PPT, credited to NASA/JPL-Caltech with Diana Logreira as the science official and last updated November 8, 2024.