The projectile reached a speed of 6.5 km per second before impact. First Light's highly sophisticated target focuses this impact, with the fuel accelerated to over 70 km per second (151,000 mph) as it implodes, an increase in velocity achieved through their proprietary advanced target design, making it the fastest moving object on earth at that point.

They confirmed the production of deuterium-deuterium (DD) fusion neutrons by an inertial confinement fusion target that is driven by a one-sided impact. Experiments were performed on First Light Fusion's 38 mm bore, two-stage light gas gun. This facility can launch a 100 g solid projectile at 6.5 km s−1. Neutron diagnostics included scintillators and moderated helium-3 proportional counters. They have demonstrated repeatable, coincident detection of particles on multiple scintillator detectors, within the expected time window.

First Light has received about $107 million in funding and they just raised a series C. They were founded in 2011.