The Ariane 5 from a Technical Point of View: The Ariane 5 ECA Versus its Early 5G Version
Interstellar colonization and multi-generation spaceships: Getting there is half the fun
TECHNICAL NOTE - Nuclear and Radioisotope Propulsion and Power in the Atmosphere of Titan
Slow Boat to Centauri: A Millennial Journey Exploiting Resources Along the Way