Voyager Technologies debuted on the New York Stock Exchange June 11, raising nearly $383 million in an upsized IPO that investors hope will spur more space-focused companies to go public.

Voyager Technologies Inc. shares gained as much as 139% in their debut after the company raised $383 million in an upsized US initial public offering.The Denver-based defense contractor’s stock traded at $69.

In this week’s edition of The Prototype, we look at a big space stock IPO, Korea’s plan to dominate the world of robots, building electric motors without metal and more.