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NASA to retry Artemis I Moon rocket launch on Saturday

SLS is ready to try again. (Richard Angle)

Published

3 years ago

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NASA says it has alleviated issues that arose during its first Space Launch System (SLS) Moon rocket launch attempt and will try again as early as Saturday, September 3rd.

Measuring around 98 meters (~322 feet) tall and capable of launching up to 95 tons (~210,000 lb) to low Earth orbit, the SLS rocket’s first launch – Artemis I – will attempt to send NASA Orion spacecraft on its way to lunar orbit. If all goes to plan, a partial prototype of the deep space crew transport vehicle will enter orbit spend several weeks around the Moon, where it will attempt to prove that Orion is safe and ready to launch NASA astronauts.

Approximately six years behind schedule and tens of billions of dollars over budget, the combined Orion spacecraft and SLS rocket were originally expected to debut in 2016 when Congress legally required NASA to develop the combined system in 2011. It would be difficult for the stakes to be much higher.

Now, after an unsuccessful August 29th launch attempt that turned into a wet dress rehearsal test as a result of poor planning, NASA is ready to try again.

SLS is scheduled to lift off from NASA’s Kennedy Space Center (KSC) LC-39B pad no earlier than (NET) 2:17 pm EDT (18:17 UTC) on Saturday, September 3rd. Like the first, the window lasts for two hours, providing some flexibility for NASA to troubleshoot any other minor problems that might crop up during the second launch attempt.

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During the first SLS launch attempt, several problems arose, including a possible crack in Core Stage foam insulation, a misbehaving vent valve, a hydrogen fuel leak, and weather concerns that delayed the start of propellant loading by more than an hour. The most important problem, causing NASA to abort its first attempt at T-40 minutes to liftoff, involved Core Stage engine chill systems.

At the time, available data suggested that one of the Core Stage’s four modified and flight-proven Space Shuttle Main Engines (known as RS-25) was unable to chill down to the temperatures required for safe ignition. In a September 1st press conference, after more analysis, NASA now says that the rocket was, in fact, correctly trickling liquid hydrogen fuel through all four engines and that all engines were likely ready to go. The agency and its contractors say they are confident that the true cause of the unfavorable readings was a faulty temperature sensor.

In an earlier press conference, senior officials noted that the Boeing-built SLS Core Stage is designed in a way that makes those faulty temperature sensors virtually inaccessible without major work – and certainly not while the rocket is still at the launch pad. A rollback to NASA’s Vehicle Assembly Building (VAB) could easily delay the next SLS launch attempt by 4-6 weeks, if not longer.

Perhaps as a result of the looming consequences of another rollback, instead of sending the rocket back to fix the newly discovered sensor issue, NASA officials now say they never actually needed the broken sensor and can get by without it working properly. That doesn’t entirely explain why NASA fully aborted an SLS launch attempt as a direct result of not liking the data produced by said sensor a few days prior. Nonetheless, the officials say that by analyzing several other unspecified telemetry readings within the RS-25s and SLS plumbing, they can effectively infer that the engines have been chilled to the right temperature.

In theory, if no other issues arise in the remaining 40 minutes leading up to launch, that should allow NASA to confidently launch SLS without having to replace components deep within the rocket.

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NASA will begin live coverage of its next SLS launch attempt on NASA TV at 5:45 am EDT (09:45 UTC), followed by a separate hosted broadcast (the agency’s first attempt at a 4K launch webcast) beginning at 12:15 pm EDT (16:15 UTC).

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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.

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Tesla officially launches Robotaxi service with no driver

Tesla launches its driverless Robotaxi in Austin, marking the first time the company has offered its ride-hailing service anywhere in the world.

Published

12 hours ago

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June 22, 2025

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Credit: Tesla

Tesla has officially launched its Robotaxi service platform with no driver in Austin, Texas. This is the first time Tesla has allowed driverless Robotaxis to pick up members of the public and take them around via the ride-sharing service the company has been developing for several years.

Teslarati had a first-hand look at the launch of the Robotaxi service in Austin, as we are part of the Early Access group, which is a limited group of people that will be able to hail a driverless Model Y in the geofenced area in Texas.

The Robotaxi platform is currently geofenced in a small portion of South Austin. It is roughly thirty minutes from end to end, and Tesla’s strategy is prioritizing safety through a number of safeguards that are implemented in this early program.

There is a fixed price of just $4.20 for any ride, regardless of duration, at this time. This will not always be the case, however. When a wider customer base is allowed to hail Robotaxis, ride fares will vary on things like travel distance, length of trip, and potentially time of day.

The first rides kicked off at around 2 p.m. local time in Austin. They are confined to the back row of the Model Y, while a Tesla safety monitor sits in the passenger seat. Passengers will have their personal media and streaming settings available to them as the car will sync with their driver profiles.

Rides are requested through a Robotaxi addition on the regular Tesla iOS app:

The safety monitor is only there to ensure things go smoothly with each ride. They do not have pedals or a steering wheel on their side. The car is doing everything during these Robotaxi rides.

The big takeaway from Robotaxi’s launch is that Tesla will begin generating additional revenue through this new stream. As concerns over demand and annual growth rate continue to take focus from doubters, Tesla’s continuous rollout of the Robotaxi fleet will expand potential revenue opportunities, potentially creating billions upon trillions of dollars in value.

This is something Tesla permabulls like Cathie Wood of ARK Invest and Dan Ives of Wedbush have talked about for years: the launch of a driverless Robotaxi fleet that generates new income streams for Tesla.

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First Look at Tesla’s Robotaxi App: features, design, and more

Tesla is using a Robotaxi section of its normal smartphone application to enable access to driverless vehicles roaming around Austin.

Published

13 hours ago

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June 22, 2025

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Tesla has officially launched the Robotaxi platform to a limited number of people, giving them the ability to ask for a ride from a driverless Model Y in Austin, Texas. But how do you hail a ride?

Through the Tesla Robotaxi app, which officially launched on June 22 as the company initiated the first rides for non-employees, people can request rides from driverless cars that are traveling around Austin. Teslarati gained access to the app as we are members of the Early Access Rider program.

There are only a very limited number of vehicles operating within the fleet currently, as Tesla has said the number is between 10 and 20 vehicles.

Tesla is using a Robotaxi section of its iOS smartphone app for the launch, confirming what the company said prior to the program’s maiden voyage: there would not be a separate app for the Robotaxi.

First Look at the Robotaxi App

The Tesla Robotaxi app, similar to the official Tesla App, features a simple interface that should be familiar to anyone who has used a ride-sharing app in the past. Downloading the app brings users to a sign-in page, which features a Tesla Model Y Robotaxi as a header image. Users can then log in or create an account to access the service.

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A Clean, Simple UI

Upon logging in, users are presented with a clean user interface that allows them to select a destination and pickup point. Upon booking, users are provided with a real-time update on when their Robotaxi will arrive. Users could also select some settings for their upcoming ride, such as their preferred temperature in the cabin.

Smart Suggestions

If there is one evident thing about Tesla’s Robotaxi App, it is the fact that it is smart and designed to make driverless ride sharing services feel as normal as possible. While waiting for their ride, customers are presented with a number of tips that should help them understand their robotaxi better.

These include tips on how to use the Model Y’s door handles, as well as information about the vehicle’s light signals. The app also includes smart suggestions on destinations that riders can visit using their Robotaxi. These include cafes, restaurants, parks, shopping centers, and other pertinent locations.

Credit: @BLKMDL3/X

Cybercab Theme

Another thing that is evident with the Robotaxi App is its Cybercab-inspired color theme. This is evident from the login page, which already features the golden hues of the dedicated two-seater autonomous car. The golden Cybercab color theme is used to great effect inside the app itself as well.

No Tips, at Least for Now

As observed by Tesla owner-enthusiast @BLKMDL3, Tesla is not accepting anything more than the service’s flat $4.20 rate per ride for now. If customers wish to leave a tip for the service, they would be presented with a page featuring Tesla’s hedgehog mascot saying “Just Kidding.”

Tips will likely be an option in the future, but for this stage of the Robotaxi rollout, it appears that the service really will follow a flat rate system.

 

 

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Watch Tesla’s first driverless public Robotaxi rides in Texas

Tesla’s first driverless Robotaxi rides for non-employees are starting with the first drives beginning today.

Published

14 hours ago

on

June 22, 2025

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Tesla has finally launched its Robotaxi platform to members of the public for the first time in Austin, Texas.

The Tesla Robotaxi platform is a driverless ride-hailing service that will enable people to use their cars for passive income as they will ride around, find riders, and drive them to their destinations in exchange for money. For right now, Tesla is using company vehicles, the Model Y specifically, and has opened up rides to a small number of people who are a part of the Early Access Program.

Teslarati is a member of the Early Access Program, as we were invited to Austin for the launch. We have gained access to Tesla’s new Robotaxi app, which lies within the main Tesla iOS app, and we are able to use the Robotaxi fleet during the Early Access Program.

The first rides are already occurring as Tesla launched the platform at around noon local time in Austin on Sunday:

The video shows that Tesla’s initial Robotaxi rides are being quite cautious. Currently, the Robotaxis can only travel within a geofenced portion of Austin. This area will eventually be expanded.

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For the time being, Tesla is keeping a safety rider in the vehicles with occupants, but they do not take up the driver’s seat. Instead, they are sitting in the passenger’s seat. This is simply a safety precaution that Tesla is using to keep Early Access riders safe, although there are ways riders can alert Tesla of any issues.

In the initial communication Tesla sent to members of the Early Access Rider program, the company said the Cabin Camera would be deactivated for the duration of their rides, but can be used if the rider needs support. Additionally, the in-cabin microphone will be deactivated, but can also be used to get in contact with support if there are any issues during the ride.

We have seen a variety of different Robotaxis rolling around Austin for the past several weeks. The company has been testing the vehicles in a very limited way for the time being, and it only has between 15 and 20 Robotaxis in the city for the launch. This number will slowly grow over time.

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