Longshot raises $20m for ground-based kinetic space launcher

Longshot, an Alameda-based defence and space technology company, has secured a $5 million investment from Silicon Valley community fund South Park Commons, lifting its total funding to $20 million. The round backs a system the company calls a "space gun": a ground-based, multi-injection kinetic accelerator designed to propel payloads to hypersonic velocities and, eventually, into orbit. The announcement arrives as governments across NATO and the Indo-Pacific accelerate hypersonic weapons and missile-defence programmes, and as commercial launch operators face persistent pressure to drive down the cost per kilogram to orbit.

The core engineering premise is deliberately contrarian. Where rockets carry their own propulsion system into the sky, at enormous recurring cost, Longshot's architecture keeps all the energy-generating infrastructure on the ground, firing a projectile in a single high-velocity burst. The company says its newest prototype, internally nicknamed the "minigun," is officially the largest ballistic launching device in the world. A dedicated test facility, location undisclosed, is being constructed to accelerate 100-kilogram payloads beyond Mach 5, the threshold conventionally defined as hypersonic flight.

Defence pedigree meets venture capital

The raise is notable for the institutional breadth behind it. Longshot reports backing from both venture investors and the US government, and has recruited Mark Bigham, formerly Chief Innovation Officer at Raytheon, to lead government sales and strategic relations. That combination of Silicon Valley capital and defence-industry credibility mirrors a wider pattern in dual-use deep tech, where companies such as Anduril, Hadrian, and Firestorm have found that Pentagon adjacency materially de-risks early-stage bets for private investors. Aditya Agarwal, General Partner at South Park Commons, said the team had demonstrated "exceptional technical execution, clear progress against ambitious milestones, and the potential to create an entirely new category of launch infrastructure."

The US Air Force's involvement, referenced without financial detail in the release, also signals that the technology sits comfortably within the US defence establishment's expanding appetite for alternative access-to-space modalities. Congress and the Pentagon have both flagged vulnerability in America's dependence on a narrow roster of launch providers; a ground-based kinetic option, if it matures, would diversify that stack considerably.

Cross-sector read-across: launch economics touch everything

The strategic implications of cheaper, high-frequency hypersonic launch reach well beyond aerospace. Scientific payload economics are the first-order effect: universities and national laboratories routinely forgo small experiments because rideshare pricing remains prohibitive for non-commercial users. A scalable kinetic launcher could commoditise access for materials science, atmospheric research, and in-space manufacturing trials.

The second-order effect sits in capital markets. The broader new-space sector has absorbed tens of billions in private and sovereign capital over the past decade, much of it concentrated in rocket-based incumbents such as SpaceX, Rocket Lab, and a cohort of European and Asian national programmes. A credible non-rocket pathway to orbit would not merely compete with those incumbents; it would reframe the underlying investment thesis for the entire launch vertical. Sovereign wealth funds in the Gulf and Asia that have recently allocated to space infrastructure, often pairing launch with satellite communications and earth-observation bets, will be watching Longshot's test milestones closely as a signal of whether the economics of kinetic launch can reach parity with reusable rockets at scale.

For now, the company is in the testing phase, and the gap between a Mach 5 test gun and a working orbital launcher is measured in years and hundreds of millions of dollars. The immediate priority is validating the multi-injection accelerator's performance at the new facility. But in a capital environment where differentiated launch technology commands a premium, $20 million and a Raytheon veteran on the team is a credible starting position.