Rocket Lab Aims for New Heights with Neutron and Interplanetary Ambitions

Rocket Lab’s Plans for 2026: Neutron and Beyond

In 2026, Rocket Lab will continue the launches of its Electron rocket but also plans to introduce a new generation rocket, Neutron, no earlier than mid-year. This medium-class launch vehicle will be launched from a new pad located on Wallops Island (Wallops Island), where a pad already exists for Electron. Rocket Lab is also participating in a bid for future NASA missions to Mars, including the Mars Telecommunications Orbiter (MTO). In 2025, Electron was one of the most-used rockets, performing 21 launches from three sites without a single failure. Since its debut in 2017, Electron has completed 79 flights, 4 of which failed. Some of the 21 missions in 2025 were suborbital, in the Hypersonic Accelerator Suborbital Test Electron (HASTE) configuration.

Neutron will be larger and more powerful than Electron: the rocket’s height is 43 meters, and the diameter is 7 meters. Liquid methane and liquid oxygen will be used as fuel. Neutron will be partially reusable: the first stage is designed to land on the Return on Investment platform. The first stage will be equipped with nine Archimedes engines, and the second stage will have one Archimedes engine optimized to work in a vacuum. To reuse most of the Neutron, the company has developed the Hungry Hippo fairing, which encloses the second stage within the first. This design allows for the recovery of both the fairing and the first stage. With Neutron’s arrival, initially scheduled for December 2025 but now shifted to mid-2026, the company plans to put more mass into orbit and carry more diverse payloads. Electron can deliver 300 kg to low Earth orbit. Neutron is projected to deliver up to 13,000 kg (or 15,000 kg in disposable configuration) and up to 1,500 kg to Mars or Venus. Rocket Lab specifically developed Neutron for the deployment of satellite megaconstellations and to support deep space missions.

Since early 2021, Neutron development has been underway, and in 2025, the rocket underwent numerous final tests and certifications. In April, the second-stage carbon composite structure underwent qualification testing where a tensile force of 1.3 million pounds (about 590 tons) was applied to its structure. Moreover, the company tested the flight software, avionics, and guidance systems under cryogenic conditions. In May, the top part of the first stage, with attached fairings and aerodynamic stabilizers, completed qualification tests. By December, the Neutron fairing systems were fully qualified.

Expanded Operations and Future Endeavors

Besides rocket carriers’ development, Rocket Lab is involved in satellite construction and development. Rocket Lab’s first interplanetary mission launched in November, when two Blue and Gold spacecraft from NASA’s ESCAPADE mission, developed and built by the company, were launched aboard a Blue Origin New Glenn rocket. Rocket Lab also presented its proposal for the Mars Telecommunications Orbiter (MTO) program in September 2025, in response to a NASA contract to develop a communications satellite for spacecraft on the surface of Mars and in orbit around Mars.

On December 19, Rocket Lab announced a new contract with the Space Development Agency (SDA), a United States Space Force division, to develop 18 satellites for Tranche Tracking Layer 3. This complements the existing contract with SDA to manufacture 18 satellites for Tranche 2 Transport Layer-Beta. In total, SDA has allocated over $1.3 billion to Rocket Lab for satellite development.

With Neutron, Rocket Lab is targeting the satellite megaconstellation deployment market, which includes prominent players like SpaceX’s Starlink and Amazon’s Project Kuiper. This market is expected to rapidly expand over the next few years, creating opportunities for new providers.

Rocket Lab continues its advancement as a major player in space missions and is strategically positioning itself among competitors by offering cost-efficient and reliable services. Neutron’s development aims to challenge similarly sized launch vehicles in the market, such as SpaceX’s Falcon 9, presenting a competitive edge in cargo capacity and new mission capabilities.