“@Tenjin37151 @Space_Station @SpaceX @Commercial_Crew @NASA @esa @JAXA_en @astro_kimbrough @Astro_Megan @Thom_astro @Aki_Hoshide As described in The Moon is a Harsh Mistress (great book), a linear accelerator would be great for the moon. Earth’s gravity is too high & atmosphere too dense for accelerators to be a good solution vs reusable boosters imo.”