Interorbital Systems (IOS) is a rocket, satellite, and spacecraft manufacturing company and launch-service provider founded in 1996 by Roderick and Randa Milliron. Interorbital's innovative modular launch vehicle series, the NEPTUNE, is poised to provide the world's lowest-cost access to space. IOS is committed to providing reliable and affordable space-launch solutions for Earth orbit and beyond.


Low-Cost Orbital Launch Vehicle

In keeping with its goal of lowering launch costs and making orbital tranport more affordable to a wider customer base, IOS currently offers the world's lowest-cost orbital launch services with its NEPTUNE-Series rockets

NASA SBIR Recipient

Interorbital Systems is funded by private, commercial, and government sources. Acknowledged by NASA as an industry leader, IOS won a NASA SBIR contract in 2011

Vertical Integration

In order to provide the lowest-cost and most reliable launches for its customers, IOS manufactures the majority of its launch vehicle components and satellite kits in-house, using off-the-shelf secondary components wherever possible

Proven Satellite Technology

IOS TubeSats have been successfully deployed into Low Earth Orbit and used for communications and experimentation

Flexible Launch Methods

Interorbital's Ocean Barge Launch System allows IOS customers to launch rockets from almost any ocean location, allowing scheduling and inclination flexibility while at the same time avoiding expensive spaceport fees

Mojave Air and Space Port

Interorbital Systems is located at the Mojave Air and Space Port in Mojave, California. A hotbed of innovation in the private space industry, the spaceport boasts manufacturing facilities, hangars, dedicated test sites, and a large pool of space engineering talent. IOS was one of the first companies to establish itself in 1996 at the now-bustling spaceport, which was the first US spaceport licensed for horizontal launches of reusable spacecraft.

In a day at the spaceport, it is common to see vintage trainer airplanes from the nearby flight school flying alongside experimental aircraft and spacecraft. Rumbles and dust plumes in the distance indicate rocket engine tests, and fighter jets from nearby Edwards Air Force Base scream overhead in tight formation. It's a place where engineers and visionaries come together with test pilots and space industry veterans to push the envelope in the private space industry.