Planets form and obtain their compositions in disks of gas and dust around young stars. The
chemical compositions of these planet-forming disks regulate all aspects of planetary …

▪ Abstract Our understanding of the evolution of organic molecules, and their voyage from
molecular clouds to the early solar system and Earth, has changed dramatically …

We report the detection for the first time in space of three new pure hydrocarbon cycles in
TMC-1: cC 3 HCCH (ethynyl cyclopropenylidene), cC 5 H 6 (cyclopentadiene), and cC 9 H 8 …

We present laboratory rotational spectroscopy of five isomers of cyanoindene (2-, 4-, 5-, 6-,
and 7-cyanoindene) using a cavity Fourier transform microwave spectrometer operating …

We present the fifth release of the UMIST Database for Astrochemistry (UDfA). The new
reaction network contains 6173 gas-phase reactions, involving 467 species, 47 of which are …

High-energy photons, electrons, and ions initiate ion–neutral chemistry in Titan's upper
atmosphere by ionizing the major neutral species (nitrogen and methane). The Ion and …

The physical and chemical processes leading to the formation of molecules in the interstellar
medium (ISM) sthe vast voids between the starssfascinated scientists since the first detection …

A global-mean model of coupled neutral and ion chemistry on Titan has been developed.
Unlike the previous coupled models, the model involves ambipolar diffusion and escape of …

In the context of recent observations, microphysical models, and laboratory data, a
photochemical model of Titan's atmosphere, including updated chemistry focusing on rate …

We report the release of a new version of the UMIST database for astrochemistry. The
database contains the rate coefficients of 3864 gas-phase reactions important in interstellar …