Molecular Astrophysics: Cool stars and exoplanets The spectra of “cool” astronomical objects such as low mass stars, brown dwarfs and exoplanets are dominated by molecular absorption features. Of particular interest are methane, water, ammonia and diatomic hydrides at high temperatures. An overview of this area of molecular astronomy will be presented from a spectroscopic perspective. The talk will include emission and absorption laboratory measurements of hot molecules by Fourier transform spectroscopy related to exoplanets.