SpaceX Starlink 10-43 Launches After Weather Scrub

What happened with the Starlink 10-43 launch?

SpaceX launched 29 Starlink satellites on June 4, 2026, at 6:26:30 a.m. EDT from Space Launch Complex 40 at Cape Canaveral Space Force Station. The Falcon 9 lifted off roughly 24 hours after a weather scrub on June 3 at 7:24 a.m. EDT. Full details are in Spaceflight Now's live coverage of Starlink 10-43.

After liftoff, the Falcon 9 flew a north-easterly trajectory. Booster B1090 separated, returned to Earth, and landed on the drone ship about 8.5 minutes after launch.

Why did the first attempt scrub?

Weather was the only obstacle on June 3. The 45th Weather Squadron forecast conditions too poor to proceed, forcing a 24-hour stand-down.

By Thursday, June 4, the same forecasters put the odds of favorable weather at 95 percent. A passing front had dried out the atmosphere.

Launch weather officers noted that "mid to upper-level clouds will persist but will most likely be too high to pose an LLCC concern." They also said "latest model guidance has become drier behind the front with the latest runs, leading to a drop in POV for the initial launch window Thursday morning." A small risk from cumulus clouds remained on paper but never became a real problem.

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What is booster B1090, and how many times has it flown?

B1090 completed its 12th flight on this mission. Its previous launches covered three different mission types:

• NASA's Crew-10 — a crewed mission to the International Space Station
• CRS-33 — a cargo resupply flight to the ISS
• Bandwagon-3 — a commercial rideshare mission

That range — human spaceflight, government cargo, and commercial rideshare — makes B1090 one of SpaceX's more versatile boosters. Flying a single first stage 12 times is no longer unusual for SpaceX. What stands out with B1090 is the variety of customers and mission profiles it has supported.

Does passing 10,000 satellites matter?

The Starlink 10-43 mission pushed the constellation past 10,000 spacecraft in low Earth orbit. That number matters as a network-density indicator, not just a headline figure.

At this scale, most points on Earth can see multiple Starlink satellites at once. That overlap is what allows the network to offer the redundancy and consistent latency that enterprise and government customers need.

The 10,000-satellite mark also raises the bar for competitors. Matching that orbital density takes both capital and a launch rate that only SpaceX currently runs at scale. Amazon's Project Kuiper and other rivals are still in early deployment. The gap between Starlink's operational network and the next closest competitor is measured in years of flight rate, not just satellite count.

What does this mission signal about SpaceX's launch pace?

The mission designation itself tells the story. The "10" prefix marks the tenth orbital shell or campaign group in SpaceX's internal numbering. Mission 43 within that group reflects a near-weekly launch rhythm. A single 24-hour weather delay barely registers as a disruption at that pace.

SpaceX has made LEO broadband deployment routine. Individual launches are operationally unremarkable now. The more important question is whether ground-side infrastructure — user terminals, gateway stations, and inter-satellite laser links — can keep up with satellites being added to orbit.

Hardware in orbit that outpaces demand is idle capital. SpaceX's next real stress test is not launch cadence. It is whether subscriber and enterprise revenue grows fast enough to match a constellation that is still expanding.

If Starlink's subscriber figures do not show clear acceleration within the next 12 months, the 10,000-satellite mark may be remembered as the point where deployment began to outrun commercial demand.

Frequently asked questions

When did SpaceX launch the Starlink 10-43 mission? SpaceX launched Starlink 10-43 on June 4, 2026, at 6:26:30 a.m. EDT from Space Launch Complex 40 at Cape Canaveral Space Force Station. That was roughly 24 hours after a weather scrub on June 3.

How many satellites did Starlink 10-43 carry? The mission carried 29 Starlink satellites, bringing the total constellation to more than 10,000 spacecraft in low Earth orbit.

What is Falcon 9 booster B1090 and how many times has it flown? B1090 is a Falcon 9 first-stage booster. Starlink 10-43 was its 12th flight. Previous missions include NASA's Crew-10, CRS-33, and Bandwagon-3, covering crewed, cargo, and rideshare categories. It landed on the drone ship about 8.5 minutes after liftoff on June 4.