SpaceX Closes June With a Space Force Launch and a Starship Tank Test

SpaceX had a busy last day of June. From Cape Canaveral, a Falcon 9 lifted off carrying the GPS III SV03 satellite, and this one comes with a bit of a milestone attached: it’s the first mission SpaceX has flown under the banner of the U.S. Space Force, the branch stood up late last year as the Pentagon’s dedicated space service. Previous GPS III launches were flown for the Air Force, so this is really just a paperwork-and-org-chart change more than an operational one, but it’s a small marker of how fast things are moving in military space right now.

GPS III satellites are the newest generation of the GPS constellation, built by Lockheed Martin, and they’re supposed to bring better accuracy, stronger anti-jamming resistance, and a longer service life than the satellites they’re replacing. SV03 joins two earlier GPS III birds already in orbit. None of this is flashy, but modernizing GPS is one of those unglamorous infrastructure jobs that everything else — phones, banking timestamps, precision weapons, aviation — quietly depends on.

And down in Boca Chica

While the Falcon 9 was doing an already-familiar job well, SpaceX’s Starship program hit a genuine “first” of its own. The SN5 prototype completed a cryogenic proof test at the Boca Chica test site in South Texas, pressurizing its tanks with liquid nitrogen to check whether the structure can hold up under the kind of pressure and thermal stress it’ll see with actual cryogenic propellants. This is the unglamorous-but-essential step that comes before you let a vehicle anywhere near a real static fire or hop test — you want to know the tanks won’t crumple or split a weld seam before you put fuel anywhere near them.

Starship testing at Boca Chica has been a rollercoaster this year, with earlier prototypes (SN1 and SN4 among them) failing during pressure testing, in some cases spectacularly. So a clean cryo proof on SN5 is a genuinely good sign that fixes to the tank design and manufacturing process are sticking. It doesn’t guarantee anything about what comes next, but it’s a necessary box to check before SpaceX can talk seriously about a hop test with this vehicle.

It’s a neat contrast to end the month on: one program (Falcon 9 and GPS) that’s mature, reliable, and now just quietly absorbing a new customer in the Space Force, and another (Starship) that’s still in the scar-tissue phase of development, learning one tank at a time what it takes to build a vehicle this size. Both matter for where SpaceX is headed — the steady cash-and-reputation business of national security launches, and the much riskier bet on a fully reusable super heavy-lift rocket. If SN5 keeps stacking up clean test results, a hop attempt feels like it could be weeks rather than months away, though I’d hold off on guessing a date until SpaceX starts stacking hardware for one.