Connect with us
SpaceX's third Block 5 Falcon 9 booster shows off its well-worn octaweb and Merlin engines after a successful launch debut and recovery. (Pauline Acalin) SpaceX's third Block 5 Falcon 9 booster shows off its well-worn octaweb and Merlin engines after a successful launch debut and recovery. (Pauline Acalin)

SpaceX

SpaceX test-fires Falcon 9 Block 5 booster for upgraded rocket’s fifth launch

Published

on

After a couple of weeks of mysterious delays, SpaceX is once again back in the saddle for its next orbital mission and has successfully completed Falcon 9’s routine prelaunch wet dress rehearsal and static fire. This rocket will launch Telstar 19V’s (launched in July) sister communications satellite Telstar 18V to a high-energy transfer orbit at 11:28 PM EDT, September 8 (03:28 UTC, September 9).

SpaceX’s static fire testing – conducted once in Texas with just the first stage and once at the launch site with the upper stage attached – is very nearly identical to a real launch, save for the fact that the rocket is not allowed to actually lift off from the pad, and only ignites its main engines for a handful of seconds.

Falcon 9 B1049 seen mid-static fire on September 5th.

Almost entirely unique to SpaceX in the launch industry, Falcon 9 and Falcon Heavy are perhaps the only operational (orbital-class) rockets in the world to still conduct routine test fires of integrated segments, including both boosters, upper stages, and even Dragon spacecraft thrusters (both Crew and Cargo variants). Other launch providers like ULA, Arianespace, and Roscosmos will typically test engines individually, but that testing is often not even routine – spot checks more than anything systematic.

In fact, SpaceX’s system of hardware testing as extraordinarily extensive. Aside from test firing integrated boosters and upper stages, SpaceX doubles down on that testing both at the launch site and in Texas. Prior to integrated testing, essentially all rocket engines (sea-level Merlin 1Ds, vacuum Merlin 1Ds, SuperDraco thrusters, Draco thrusters, and Falcon’s cold gas maneuvering thrusters) are hot-fire (or cold-fire, in the case of the cold gas thrusters) tested in Texas after completing assembly in Hawthorne.

Advertisement

 

After that, the individual rocket engines and thrusters are shipped back to Hawthorne, integrated into their Dragon, Falcon upper stage, or Falcon booster parent rocket, and then shipped back to Texas once more for integrated test-fires, shipped to their launch site, and test-fired yet again (in the case of Falcon 9 and Heavy, not Dragon). This extraordinarily systematic testing apparatus is without a doubt unique to SpaceX, with the only closest comparison being found in small launch startup Rocket Lab, which is also extensively vertically integrated, including in-house tests of all engines prior to shipment.

Much like modern aircraft (particularly airliners) routinely test all critical systems prior to takeoff, particularly a full-thrust engine check with brakes applied, SpaceX and Rocket Lab are explicitly attempting to replicate in spaceflight the sort of practices that have helped to make air travel perhaps the safest and most reliable method of transportation ever created by humans.

Advertisement

For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

Advertisement
Comments

News

SpaceX successfully launches 100th Starlink mission of 2025

With 100 Starlink missions completed for 2025, space enthusiasts have noted that SpaceX has successfully launched 2,554 Starlink satellites so far this year.

Published

on

Spacex-starlink-dish-gigabit-speed-vs-europe
(Credit: Starlink)

SpaceX achieved its 100th Starlink mission of the year on Friday, October 31, marking another milestone for 2025. 

A Falcon 9 rocket carrying 28 Starlink broadband satellites successfully lifted off from Vandenberg Space Force Base in California at 4:41 p.m. ET, carrying another 28 Starlink satellites to Low Earth Orbit (LEO).

Falcon 9 booster’s 29th flight

Roughly 8.5 minutes after liftoff, the Falcon 9’s first stage touched down on the drone ship Of Course I Still Love You in the Pacific Ocean. This marked the booster’s 29th flight, which is approaching SpaceX’s reuse record of 31 missions.

This latest mission adds to SpaceX’s impressive 138 Falcon 9 launches in 2025, 99 of which were dedicated to Starlink, according to Space.com. The company’s focus on reusing boosters has enabled this breakneck pace, with multiple launches each week supporting both Starlink’s expansion and external customers.

Starlink’s network continues massive global expansion

Starlink remains the largest active satellite constellation in history, with more than 10,000 satellites launched, nearly 8,800 of which are currently active. SpaceX recently achieved Starlink’s 10,000-satellite milestone. With 100 Starlink missions completed for 2025, space enthusiasts have noted that SpaceX has successfully launched 2,554 Starlink satellites so far this year.

Advertisement

Starlink, which provides high-speed, low-latency internet connectivity even to the world’s most remote areas, has been proven to be life-changing technology for people across the globe. The service is currently operational in about 150 countries, and it currently has over 5 million subscribers worldwide. From this number, 2.7 million joined over the past year.

Continue Reading

SpaceX

SpaceX checks off 49 lunar lander milestones in push toward Artemis III

Published

on

Credit: SpaceX

SpaceX has revealed that it has completed 49 major milestones for NASA’s Human Landing System (HLS) program, marking significant progress in the development of the Starship lunar lander that will deliver astronauts to the Moon. 

The updates were detailed in SpaceX’s new blog post To the Moon and Beyond, which was recently posted on the private space company’s official website.

As noted by SpaceX, the 49 milestones that were completed by its HLS team were “tied to developing the subsystems, infrastructure, and operations” needed to safely land humans back into the lunar surface. SpaceX noted that it has only received funding on contractual milestones that have been successfully completed, the vast majority of which have been achieved on time or ahead of schedule.

Following are highlights of SpaceX’s completed milestones, as per the company’s post. 

Advertisement
  • Lunar environmental control and life support and thermal control system demonstrations, using a full-scale cabin module inhabited by multiple people to test the capability to inject oxygen and nitrogen into the cabin environment and accurately manage air distribution and sanitation, along with humidity and thermal control. The test series also measured the acoustic environments inside the cabin
  • Docking adapter qualification of the docking system that will link Starship and Orion in space, an androgynous SpaceX docking system capable of serving as the active system or passive system and based on the flight-proven Dragon 2 active docking system
  • Landing leg drop test of a full-scale article at flight energies onto simulated lunar regolith to verify system performance and to study foot-to-regolith interaction
  • Raptor lunar landing throttle test demonstrating a representative thrust profile that would allow Starship to land on the lunar surface
  • Micrometeoroid and orbital debris testing of shielding, insulation, and window panels, analyzing different material stackups that will be used to protect Starship from impact hazards and harsh thermal conditions
  • Landing software, sensor, and radar demonstrations testing navigation and sensing hardware and software that will be used by Starship to locate and safely descend to a precise landing site on the Moon
  • Software architecture review to define the schematic of major vehicle control processes, what physical computers they will run on, and software functions for critical systems like fault detection, caution and warning alerts, and command and telemetry control
  • Raptor cold start demonstrations using both sea-level and vacuum-optimized Raptor engines that are pre-chilled prior to startup to simulate the thermal conditions experienced after an extended time in space
  • Integrated lunar mission operations plan review, covering how SpaceX and NASA will conduct integrated operations, develop flight rules and crew procedures, and the high-level mission operation plan
  • Depot power module demonstration, testing prototype electrical power generation and distribution systems planned to be used on the propellant depot variant of Starship
  • Ground segment and radio frequency (RF) communications demonstration, testing the capability to send and receive RF communications between a flight-equivalent ground station and a flight-equivalent vehicle RF system
  • Elevator and airlock demonstration, which was conducted in concert with Axiom to utilize flight-representative pressurized EVA suits, to practice full operation of the crew elevator which will be used to transfer crew and cargo between Starship and the lunar surface
  • Medical system demonstration covering the crew medical system on Starship and the telemedicine capability between the ground and crew
  • Hardware in the loop testbed activation for the propellant transfer flight test which uses a testbed with flight representative hardware to run simulations for the upcoming propellant transfer flight test

Ultimately, SpaceX’s message is clear. With its plans for a simplified architecture, the timeframe of the first crewed lunar landing of the current century could happen sooner than expected.

Musk definitely seems determined to prove skeptics wrong, with the CEO declaring on X that Starship will be the vehicle that would pave the way for the buildout of a base on the Moon. “Starship will build Moonbase Alpha,” Musk wrote.

Continue Reading

News

SpaceX sets the record straight on Jim Bridenstine and Artemis 3

SpaceX argued that Bridenstine’s comments should be taken with a grain of salt as he is working as a paid lobbyist for companies that are competing for NASA contracts.

Published

on

Credit: SpaceX

SpaceX pushed back firmly against former NASA administrator Jim Bridenstine after he questioned the agency’s reliance on Starship for the Artemis 3 Moon mission. 

In a detailed thread on X, SpaceX argued that Bridenstine’s comments should be taken with a grain of salt as he is working as a paid lobbyist for companies that are competing for NASA contracts.

Bridenstine’s comments on Starship and Artemis 3

Bridenstine and fellow former NASA chief Charlie Bolden noted during a recent symposium that NASA’s current Artemis strategy is approaching zero chance of beating China to the Moon. Bridenstine expressed skepticism that NASA’s current architecture, which is expected to use Starship to transport astronauts to and from the lunar surface, could succeed in time. 

“Starship is a tremendously important vehicle for the future,” Bridenstine said, as per Space News. “It’s going to deliver large mass to low Earth orbit for a long time, and it’s going to drive down costs and increase access. But if you need a moon lander, it’s going to take time.” 

SpaceX responds to the former NASA administrator’s comments

In a series of posts on X, SpaceX noted that while the company is very thankful to the former NASA administrator for helping create the Artemis Program, his comments about Starship might not necessarily be coming from a place of objectivity. 

Advertisement

SpaceX’s comments are as follows: “Like many Americans, we are thankful for Mr. Bridenstine’s service leading NASA at one point. He deserves credit for spearheading the creation of the Artemis Program. After departing NASA, he created a lobbying firm called the Artemis Group, representing a host of aerospace companies vying for NASA business. 

“Mr. Bridenstine’s current campaign against Starship is either misguided or intentionally misleading. SpaceX was selected to design and develop a Human Landing System for Artemis along with Blue Origin and Dynetics during Mr. Bridenstine’s tenure as NASA Administrator. 

“Starship was then selected by NASA for the Artemis III mission through fair and open competition after being identified as the best and lowest risk technical option – and the lowest price by a wide margin – by the civil servant team appointed to lead the agency’s exploration mission by Mr. Bridenstine himself. 

“The decision to select Starship was confirmed repeatedly following protest and litigation from the companies not selected which delayed the start of work on the contract for many months. Mr. Bridenstine’s recent musings promoting a new landing system – going so far as to invoke the Defense Production Act – are being misreported as though they were the unbiased thoughts of a former NASA Administrator. They are not.

“To be clear, he is a paid lobbyist. He is representing his clients’ interests, and his comments should be seen for what they are – a paid lobbyist’s effort to secure billions more in government funding for his clients who are already years late and billions of dollars overbudget,” SpaceX wrote. 

Advertisement
Continue Reading

Trending