Recent News

Former NASA administrator Jim Bridenstine told Breaking Defense that Phase Four has the potential to “disrupt the in-space propulsion market,” and its technology “is important for the country.”

Leveraging its new Block 2 architecture, Phase Four announces Max-V, a revolutionary plasma propulsion system available in 2023

Propulsion startup Phase Four is expanding its Maxwell plasma propulsion line by offering Max-V, an iodine-fueled engine.

Bridenstine brings a wealth of industry experience and a commitment to space sustainability

Former NASA Administrator Jim Bridenstine joined the board of directors of spacecraft propulsion startup Phase Four, the company told CNBC.

Phase Four, the creator of the radio-frequency thruster (RF Thruster) for satellite propulsion, announced today that it has signed a memorandum of understanding with Impulse Space, a Space 2.0 pioneer providing agile, economical last-mile space payload delivery capabilities.

Phase Four has just released the updated ICD rev B of our Maxwell Block 2 engine. Please reach out to us directly in order to download the document.

Phase Four is building out a new 23,000 sq.ft. production facility to support high volume plasma propulsion engine manufacturing.

El Segundo-based Phase Four today finalized a lease to build a second factory and scale production of its Maxwell engine product line. The new Hawthorne facility will be over 3X larger than Phase Four’s current plant, and capable of cranking out 100 engines a year.

For most of the last decade, the U.S. relied almost entirely on Russia for rocket engines and crewed launches into space.