Prospects for Interstellar Propulsion
https://ntrs.nasa.gov/search.jsp?R=20200000759&hterms=Prospects+Interstellar+Propulsion
A Sub-Neptune-sized Planet Transiting the M2.5 Dwarf G 9-40: Validation with the Habitable-zone Planet Finder
https://iopscience.iop.org/article/10.3847/1538-3881/ab5f15
Advances in Deep Space Exploration via Simulators & Deep Learning
https://arxiv.org/abs/2002.04051