SpaceX

SpaceX is an aerospace company developing reusable launch vehicles, spacecraft, and satellite communications systems for commercial, government, and human spaceflight missions. Its Falcon 9 and Falcon Heavy rockets transport satellites and spacecraft into orbit, while the Dragon spacecraft supports cargo and crew transportation. The company is also developing Starship for larger payloads and future deep-space missions. Through Starlink, SpaceX operates a satellite constellation providing broadband internet connectivity, combining launch technology, spacecraft manufacturing, and satellite communications.

Relativity Space

Relativity Space is an aerospace company developing reusable launch vehicles and rocket propulsion systems for commercial and government satellite missions. Its Terran R rocket is a two-stage launch vehicle designed to transport large satellite payloads into low Earth orbit and geosynchronous transfer orbit. The rocket uses liquid oxygen and methane-powered Aeon engines, with a reusable first stage intended to support repeated launches. The company combines aerospace manufacturing, rocket engine development, and launch vehicle engineering to support satellite constellations and space transportation missions.