Alessandra Ricca
  
  Alessandra Ricca is a 
computational chemist whose research focuses primarily on theoretical chemistry. She researches modeling properties of 
organic compounds in the gas and ice 
phases, emphasizing the formation, reactivity, spectroscopy, and optical properties of the researched compounds. In Astrophysics and Analysis at 
NASA, Ricca studies PAH infrared spectroscopy and nanograins in the interstellar medium. She loads data into the 
NASA Ames PAH IR Spectroscopic Database (PAHdb), which helps interpret 
JWST data. In NASA Solar System Workings, Ricca studies ammonia hydrates on 
Charon and other icy bodies, in which she interprets data collected by the 
Cassini mission, which detected small, large, and 
macromolecular organics near the 
Enceladus plume. The goal of this project is to determine if these substances were derived from life or 
abiotic processes. In addition to her work at NASA, Ricca is a Senior Research Chemist at the 
SETI Institute.
  
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