Impact Craters Crater Formation Water on the Moon Water Mapping Water Distribution on Moon Lunar Ice Research Volcanic Channels Lunar Instruments Surface Processes Volcanic History Ejecta Effects Extraterrestrial Habitats Impact Effects Moon Impact Extraterrestrial Geology Far Side of the Moon Exosphere Lunar Infrastructure South Polar Region of the Moon Geological Implications
The Helios transfer stage would ferry the in‑house lander from Earth orbit to lunar orbit without on‑orbit refueling.