Neutron
Neutron is a planned two-stage medium-lift launch vehicle in development by Rocket Lab. Both stages will use LOX and liquid methane as propellants. The first stage will be powered by 9 Archimedes engines, and the second stage will use a single Archimedes Vacuum engine. The vehicle will be partially reusable, with the first stage returning using an RTLS (Return-To-Launch-Site) profile. Rocket Lab has announced that Neutron will launch from NASA's Wallops Flight Facility in Virginia.