Nearly 100 years after the dirigible Graf Zeppelin made the first nonstop airship journey across the Pacific Ocean, another airship has successfully completed a round-trip flight from New Mexico to Japan and back. But the significance of this modern feat was less about the journey’s length and more about its purpose: demonstrating how a lighter-than-air platform can act as a cell phone tower in the sky.

The trans-Pacific flight that took place over a month between August and September 2026 was the most notable milestone yet for Sceye, a US aerospace company based near Albuquerque, New Mexico. Sceye has developed an uncrewed platform filled with helium for buoyancy and equipped with an electric-powered propeller for active propulsion, allowing it to resist most strong winds and keep hovering over the same location for long periods. The platform also uses top-mounted solar panels and onboard batteries to stay powered for stratospheric operations around the clock.

"We can stay over an area of operation, and we do that in the stratosphere right around 60,000 feet, so we’re twice as high as air traffic and we’re above the jet stream, and yet 30 times closer than low-Earth orbit satellites, " Mikkel Frandsen, founder and CEO of Sceye, told Ars. "We can fly through day and night until the sun comes up the next morning and recharges the batteries, at which point we’re still at the same altitude and still over the same area of operation."

Flying higher, there have been many past technology demonstrations and attempts to make stratospheric platforms commercially viable since the late 1990s, Frandsen said. In Sceye’s case, the company began testing a series of smaller prototypes in 2016 before eventually reaching the stratosphere with a 215-foot (65-meter) length version in 2021. The latest version extends to 270 feet (83 meters).