On Alien Worlds, Extraterrestrials Could Be Spewing a Toxic, Smelly Gas. That’s How We Could Find Them.
https://www.livescience.com/65791-alien-life-may-spew-toxic-gas.html
Modelling galactic settlement
https://phys.org/news/2019-06-galactic-settlement.html
10th Global Trajectory Optimisation Competition
https://gtocx.jpl.nasa.gov/gtocx/
Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M Dwarf System at 6.9 Parsecs
https://arxiv.org/abs/1906.10147
Thermal Tides in Rotating Hot Jupiters
https://arxiv.org/abs/1906.10330
Atmospheric Evolution on Low-Gravity Waterworlds
https://arxiv.org/abs/1906.10561
Galactic Tide and Local Stellar Perturbations on the Oort Cloud: Creation of Interstellar Comets
https://arxiv.org/abs/1906.10617