Rocket startup Relativity Space is expanding its launch sites from one to two, with a new agreement to fly its future rocket out of Vandenberg Air Force Base in Southern California. The deal means Relativity, which already has a lease for a launch site in Cape Canaveral, Florida, will be able to fly from either the East or West Coast of the United States when its rocket is ready.

Based out of Los Angeles, Relativity Space is an ambitious rocket startup aimed at creating the first fully 3D-printed rocket. The company, started by engineers from SpaceX and Blue Origin, is currently developing its first rocket called the Terran 1. The goal is for every part of Terran 1 — including its engines, fuselage, and propellant tanks — to be 3D-printed in order to minimize the amount of workforce needed to manufacture the rocket and bring down costs. Relativity created its own 3D printer called Stargate to get the job done, and the company recently moved into a new 120,000-square-foot facility in Long Beach, California, to further develop the rocket.

In January of last year, Relativity announced it had signed an agreement to launch out of Cape Canaveral Air Force Station from a site called LC-16. The company plans to ramp up construction on the site to prepare for the inaugural flight of the Terran 1 currently scheduled for the end of 2021. In the meantime, Relativity has signed a "Right Of Entry Agreement" at Vandenberg Air Force Base. The company is eyeing moving into a site called Building 330 and taking over the land surrounding it.

"We have a site identified; we've gone through a program review; we've done the initial paperwork for actually getting the first step towards a site awarded," Tim Ellis, CEO of Relativity Space, tells The Verge. "It means that we're actually launching from this facility." He says that the new location will allow the company to launch to orbits that pass north to south and over poles, which its rockets could not reach from launching eastward from the Cape.