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NASA’s SLS Moon rocket is almost ready for its first trip to the launch pad

After almost a year of assembly, NASA may finally be ready to roll its SLS rocket to the launch pad for the first time - albeit not to launch. (NASA)

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NASA says its first complete Space Launch System (SLS) rocket is less than a week away from its first rollout and the start of its first East Coast ‘wet dress rehearsal’.

Teams have begun retracting work platforms surrounding the fully stacked rocket, slowly revealing the launch vehicle assigned to Artemis 1 – a much anticipated and extensively delayed uncrewed test flight of the SLS rocket and Orion spacecraft. Since April 2021, SLS and Orion have been slowly but surely assembled within the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Cape Canaveral, Florida.

Preparing the rocket for the launch pad has required an arduous and complex series of tests meant to ensure that the vehicle is ready for the stresses it will experience and the operations it will perform before and during launch. The rollout is expected to begin around 5 pm EST (22:00 UTC) on Thursday, March 17th and, if all goes well, it should take the giant crawler tasked with carrying the rocket and ‘mobile launch platform’ about 12 hours to carry them to Launch Complex 39B (LC-39B or Pad 39B). The first hour of the rollout will extricate the rocket and its mobile launch tower from the VAB, followed by an 11-hour journey to the pad.

NASA says SLS will spend around one month at Pad 39B, during which it will undergo expensive testing required to ensure its launch readiness. After two weeks on the pad, SLS will have its tanks filled with liquid hydrogen (LH2) and liquid oxygen (LOx) propellant and run through a simulated countdown in a process known as a wet dress rehearsal (WDR). Representatives of the Artemis-1 mission indicate “the countdown will end at about [T-minus 9 seconds], which is just moments before the rocket’s four RS-25 engines would ignite [before] an actual launch.” By allowing the countdown to run so low, test teams are able to check all interfaces (aside from the rocket’s RS-25 engines) that must be carefully coordinated during launch. 

Once the wet-dress is complete, SLS will be rolled back into the VAB for final launch preparations, including the identification and repair of any issues found during wet-dress, final Orion spacecraft work, and flight software updates. After SLS’ return to the VAB, NASA expects that final work to take one month to complete. However, NASA officials admit that there is still a lot of work to be done to SLS before launch, and almost every aspect of the space agency’s work on the rocket over the last two and a half years has run into extensive delays.

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An official launch date has not been chosen by NASA, as delays continue to make setting a specific date impractical. Tom Whitmeyer, NASA deputy associate administrator for exploration systems development, has indicated that a launch in April is no longer feasible. “We’re still evaluating the tail end of the May window,” he said, which runs from May 7 to 21. Future launch windows, governed by orbital mechanics and other mission constraints like ensuring that Orion is recovered in daylight, are June 6 to 16 and June 29 to July 12, with a “cutout” of July 2 to 4, when a launch would not be possible.

The Artemis-1 mission will be the first uncrewed integrated flight test of NASA’s Orion spacecraft and Space Launch System rocket. The SLS rocket is designed for missions beyond low-Earth orbit carrying crew or cargo to the Moon and beyond. At liftoff, it will weigh approximately six million pounds (~2700 tons) and produce around 8.8 million pounds (~4000 tons) of thrust.

Monica Pappas is a space flight enthusiast living on Florida's Space Coast. As a spaceflight reporter, her goal is to share stories about established and upcoming spaceflight companies. She hopes to share her excitement for the tremendous changes coming in the next few years for human spaceflight.

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Tesla to launch in India in July with vehicles already arriving: report

Tesla is finally making serious moves toward launching in India, with showrooms opening in July, a report claims.

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Credit: Tesla

Tesla is finally bringing its business to India, a new report indicates, as the company is already shipping vehicles from China to the market where it has attempted to launch business for several years.

We first heard of Tesla planning to launch in India about a decade ago when CEO Elon Musk and Indian Prime Minister Narendra Modi met in California at the Fremont Factory in 2015.

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Over the years, the two have hinted that the automaker would eventually land in India, but issues with import duties have delayed Tesla’s attempts.

Now, there seems to be some serious movement in Tesla’s plans, as it has reportedly shipped the first batch of vehicles from China to India, according to Bloomberg. The outlet says these are Model Y Rear-Wheel-Drive configurations.

Tesla is also planning for other parts of the launch, like preparing for Supercharging, aftermarket parts and merchandise purchasing for vehicle owners and fans, and spare parts from various regions, including the United States, China, and the Netherlands.

The company and the Indian government must have come to some sort of agreement that was catalyzed by Musk and Modi’s meeting in February in the U.S.

It is a long time coming, and it now gives Tesla access to an incredibly vast market in India, where a very small percentage of 2024’s total automotive sales were comprised of electric vehicles.

Another interesting tidbit about the launch is that the vehicles will be coming from Gigafactory Shanghai and not Gigafactory Berlin as previously thought. Reports from other publications, like Reuters, indicated the German production facility was building vehicles for India early last year.

India has a very strict policy that favors domestic manufacturing, which is why the import duties were so high for foreign automakers looking to bring their product into the market. These duties were reduced from 110 percent to just 15 percent, as long as companies aim to invest in India and meet certain investment and sales targets.

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SpaceX and Elon Musk share insights on Starship Ship 36’s RUD

Starship Ship 36 experienced a Rapid Unscheduled Disassembly during a static fire attempt.

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Elon Musk and SpaceX provided an explanation for the Rapid Unscheduled Disassembly (RUD) of Starship Ship 36 on Wednesday. As per Musk, preliminary data suggests that a nitrogen composite overwrapped pressure vessel (COPV) in the vehicle’s payload bay failed below its proof pressure.

On Wednesday evening, Ship 36 experienced a RUD during a static fire attempt. Videos of the incident that were shared online showed Starship Ship 36 exploding into a massive fireball at its launchpad in Starbase, Texas. Images taken in the aftermath of the explosion showed significant damage to the plumbing in the area. The site’s pad structure was also destroyed.

Elon Musk shared some information immediately after the incident. In a response to a post from space enthusiast @Erdayastronaut, Musk stated that “Preliminary data suggests that a nitrogen COPV in the payload bay failed below its proof pressure.”

Musk also noted that, “If further investigation confirms that this is what happened, it is the first time ever for this design.”

SpaceX provided more insight into the incident in a post on its official website.

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“After completing a single-engine static fire earlier this week, the vehicle was in the process of loading cryogenic propellant for a six-engine static fire when a sudden energetic event resulted in the complete loss of Starship and damage to the immediate area surrounding the stand.

“The explosion ignited several fires at the test site, which remains clear of personnel and will be assessed once it has been determined to be safe to approach. Individuals should not attempt to approach the area while safing operations continue,” SpaceX wrote in its post.

SpaceX highlighted that despite Starship Ship 36’s RUD, the incident will not result in any hazards to the surrounding communities in the Rio Grande Valley. And in a post on X, SpaceX also confirmed that everyone in the Starship team was safe and accounted for after Ship 36’s explosion.

While Ship 36’s RUD is a speed bump for the Starship program, SpaceX is a company that is known to grow stronger with every adversity. Thus, it would not be surprising if SpaceX implemented numerous improvements to Starship after this incident–improvements that would make the vehicle more reliable and safer than before.

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Tesla has started rolling out initial round of Robotaxi invites

Tesla is putting safety above all in its initial Robotaxi rollout.

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Credit: @BLKMDL3/X

Tesla has started rolling out an initial round of invites for its upcoming Robotaxi service in Austin, Texas.

Screenshots shared by several Tesla community members who received the invites provided a quick overview of the autonomous ride-hailing service.

As noted in a techAU report, the initial round of Robotaxi service invites has gone to longtime Tesla owners and active members of the EV community. These include owners such as @SawyerMerritt, @BLKMDL3, @WholeMarsBlog, @ItsKimJava, and @HerbertOng, all of whom shared screenshots of the invitation that Tesla has sent about the upcoming service.

You’re Invited to Early Access of Tesla Robotaxi!

The Future is Now! You’re invited to Early Access of Tesla’s Robotaxi service in Austin, TX!

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As an Early Access rider, you can be among the first to use our new Robotaxi App and experience an autonomous ride within our geofenced area in Austin. Through this exclusive preview, you’ll have the opportunity to provide valuable feedback on our Robotaxi service.

Based on Tesla’s message, it appears that participation in the service would be strictly invite-only for now. Participants must also download Tesla’s dedicated Robotaxi App to hail a ride. Rides can also be requested and initiated to and from any location within a geofenced area of Austin.

The robotaxi service will be available from 6:00 AM to 12:00 AM, seven days a week, though these hours may change depending on factors such as inclement weather. Interestingly enough, Tesla is inviting the first participants of the Robotaxi program to share photos and videos of their experience with the service.

While the vehicles themselves are autonomous and would operate without human input, the Robotaxis would still be accompanied by a Tesla staff member to monitor the vehicle. This strategy suggests that Tesla is really putting safety above all in its initial Robotaxi rollout.

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