How do astrochemists typically decipher the chemical 'fingerprints' left by cosmic processes?

Answer

Analyzing light spectra emitted by cosmic clouds using powerful telescopes

Professionals in this field use data collected by telescopes that observe the light spectra emitted by cosmic clouds, which allows them to interpret the chemical signatures present.

How do astrochemists typically decipher the chemical 'fingerprints' left by cosmic processes?
jobChemistrySpacecareerastrochemistry