Spectroscopy of Exoplanet Atmospheres: Techniques, Challenges, and Prospects for Biosignatures
To the point
Spectroscopy studies exoplanet light to reveal atmospheric gases and potential biosignatures through transmission, emission, and reflected-light methods, while the signals are faint and can be confused by noise, and future tools such as JWST, high‑resolution spectrographs, and CubeSats will improve detection and broaden our understanding of planets, cosmic evolution, and dark matter.