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SpaceX test emergency egress drills ahead of upcoming crew mission

Crews practice emergency escape procedures prior to SpaceX's upcoming crew mission. Credit: SpaceX

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NASA and SpaceX are progressing full steam ahead to an epic launch of the crewed Dragon spacecraft. Known as Demo-2, the mission is estimated to blast off in mid-to-late May, marking the first-ever flight of the Dragon with astronauts on board.

As part of that historic mission, two NASA astronauts — Doug Hurley and Bob Behnken — will launch to the International Space Station, where they will spend a still to be determined amount of time. The mission, deemed critical by NASA, is progressing as planned despite the coronavirus outbreak that’s spreading across the country. 

NASA astronauts Doug Hurley, foreground, and Bob Behnken don SpaceX spacesuits in the Astronaut Crew Quarters at Kennedy Space Center in Florida on January 17, 2020, during a dress rehearsal ahead of the company’s uncrewed In-Flight Abort Test. Credit: NASA

To that end, NASA and SpaceX personnel, along with the crew, practiced essential safety drills and launch day procedures at the space agency’s Kennedy Space Center in Florida. SpaceX’s Crew Dragon capsule, and its Falcon 9 launcher, are equipped with numerous safety features designed to protect astronauts in the event of an emergency. And NASA wants to make sure they work.

One system — known as a launch escape system — was recently tested in-flight, proving that if something is wrong with the Falcon, the crews can be whisked away to safety by Dragon. But what if something goes wrong on the launch pad? The launchpad is equipped with a zipline that can be used to whisk astronauts quickly back to the ground should an emergency happen. 

On Friday (April 3), SpaceX and NASA completed an important test of that system. Teams simulated an “emergency egress”,  running through a series of steps designed to transport the astronauts off the pad, and ensure their safety in the event that a serious problem crops up prior to liftoff.

“Teams rehearsed locating injured personnel on the 265-foot-level of the launch tower, loading them into the pad’s slidewire baskets and safely descending the tower, then successfully loading the injured participants into Mine Resistant Ambush Protected (MRAP) vehicles staged at the pad perimeter,” NASA officials wrote in an update.

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This follows a series of simulations that the teams ran last month. They gathered in Firing Room 4, SpaceX HQ, and Johnson Space Center to run through launch simulations, ensuring the crew and launch control teams were ready for anything on the day of launch.

The flight is one for the history books as it marks the return of human spaceflight from U.S. soil since 2011. When the space shuttle program ended, NASA and other agencies around the world relied solely on Russia to ferry their astronauts to and from space. But that was only temporary as NASA turned to private companies to build its next generation of space taxis in 2014.

NASA astronauts Bob Behnken and Doug Hurley participating in SpaceX’s flight simulator. Credit: NASA

Ever since, the agency’s two contractors, SpaceX and Boeing, have worked to build its own version of an astronaut transport. Following a successful uncrewed test flight, SpaceX’s Crew Dragon capsule will be the first to launch astronauts for NASA. If this mission goes well, the California-based spaceflight company will be certified to launch astronauts on a regular basis.

It’s first crew of four people — NASA astronauts Michael Hopkins, Victor Glover Jr., and Shannon Walker and Japanese astronaut Soichi Noguchi — are set to fly later this year or the beginning of 2021, if all goes as planned.

Boeing completed its uncrewed test flight in December of last year; however, its capsule experienced an inflight anomaly and was unable to reach the space station. Following an extensive review, Boeing has decided to repeat its uncrewed test flight before it launches people. That flight is expected for some time this fall.

 

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I write about space, science, and future tech.

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Tesla Cybercab spotted with interesting charging solution, stimulating discussion

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

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Credit: What's Inside | X

Tesla Cybercab units are being tested publicly on roads throughout various areas of the United States, and a recent sighting of the vehicle’s charging port has certainly stimulated some discussions throughout the community.

The Cybercab is geared toward being a fully-autonomous vehicle, void of a steering wheel or pedals, only operating with the use of the Full Self-Driving suite. Everything from the driving itself to the charging to the cleaning is intended to be operated autonomously.

But a recent sighting of the vehicle has incited some speculation as to whether the vehicle might have some manual features, which would make sense, but let’s take a look:

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

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Now, it is important to remember these are prototype vehicles, and not the final product. Additionally, Tesla has said it plans to introduce wireless induction charging in the future, but it is not currently available, so these units need to have some ability to charge.

However, there are some arguments for a charging system like this, especially as the operation of the Cybercab begins after production starts, which is scheduled for April.

Wireless for Operation, Wired for Downtime

It seems ideal to use induction charging when the Cybercab is in operation. As it is for most Tesla owners taking roadtrips, Supercharging stops are only a few minutes long for the most part.

The Cybercab would benefit from more frequent Supercharging stops in between rides while it is operating a ride-sharing program.

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Tesla wireless charging patent revealed ahead of Robotaxi unveiling event

However, when the vehicle rolls back to its hub for cleaning and maintenance, standard charging, where it is plugged into a charger of some kind, seems more ideal.

In the 45-minutes that the car is being cleaned and is having maintenance, it could be fully charged and ready for another full shift of rides, grabbing a few miles of range with induction charging when it’s out and about.

Induction Charging Challenges

Induction charging is still something that presents many challenges for companies that use it for anything, including things as trivial as charging cell phones.

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While it is convenient, a lot of the charge is lost during heat transfer, which is something that is common with wireless charging solutions. Even in Teslas, the wireless charging mat present in its vehicles has been a common complaint among owners, so much so that the company recently included a feature to turn them off.

Production Timing and Potential Challenges

With Tesla planning to begin Cybercab production in April, the real challenge with the induction charging is whether the company can develop an effective wireless apparatus in that short time frame.

It has been in development for several years, but solving the issue with heat and energy loss is something that is not an easy task.

In the short-term, Tesla could utilize this port for normal Supercharging operation on the Cybercab. Eventually, it could be phased out as induction charging proves to be a more effective and convenient option.

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Tesla confirms that it finally solved its 4680 battery’s dry cathode process

The suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

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tesla 4680
Image used with permission for Teslarati. (Credit: Tom Cross)

Tesla has confirmed that it is now producing both the anode and cathode of its 4680 battery cells using a dry-electrode process, marking a key breakthrough in a technology the company has been working to industrialize for years. 

The update, disclosed in Tesla’s Q4 and FY 2025 update letter, suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

Dry cathode 4680 cells

In its Q4 and FY 2025 update letter, Tesla stated that it is now producing 4680 cells whose anode and cathode were produced during the dry electrode process. The confirmation addresses long-standing questions around whether Tesla could bring its dry cathode process into sustained production.

The disclosure was highlighted on X by Bonne Eggleston, Tesla’s Vice President of 4680 batteries, who wrote that “both electrodes use our dry process.”

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Tesla first introduced the dry-electrode concept during its Battery Day presentation in 2020, pitching it as a way to simplify production, reduce factory footprint, lower costs, and improve energy density. While Tesla has been producing 4680 cells for some time, the company had previously relied on more conventional approaches for parts of the process, leading to questions about whether a full dry-electrode process could even be achieved.

4680 packs for Model Y

Tesla also revealed in its Q4 and FY 2025 Update Letter that it has begun producing battery packs for certain Model Y vehicles using its in-house 4680 cells. As per Tesla: 

“We have begun to produce battery packs for certain Model Ys with our 4680 cells, unlocking an additional vector of supply to help navigate increasingly complex supply chain challenges caused by trade barriers and tariff risks.”

The timing is notable. With Tesla preparing to wind down Model S and Model X production, the Model Y and Model 3 are expected to account for an even larger share of the company’s vehicle output. Ensuring that the Model Y can be equipped with domestically produced 4680 battery packs gives Tesla greater flexibility to maintain production volumes in the United States, even as global battery supply chains face increasing complexity.

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Tesla Giga Texas to feature massive Optimus V4 production line

This suggests that while the first Optimus line will be set up in the Fremont Factory, the real ramp of Optimus’ production will happen in Giga Texas.

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Credit: Tesla/YouTube

Tesla will build Optimus 4 in Giga Texas, and its production line will be massive. This was, at least, as per recent comments by CEO Elon Musk on social media platform X.  

Optimus 4 production

In response to a post on X which expressed surprise that Optimus will be produced in California, Musk stated that “Optimus 4 will be built in Texas at much higher volume.” This suggests that while the first Optimus line will be set up in the Fremont Factory, and while the line itself will be capable of producing 1 million humanoid robots per year, the real ramp of Optimus’ production will happen in Giga Texas. 

This was not the first time that Elon Musk shared his plans for Optimus’ production at Gigafactory Texas. During the 2025 Annual Shareholder Meeting, he stated that Giga Texas’ Optimus line will produce 10 million units of the humanoid robot per year. He did not, however, state at the time that Giga Texas would produce Optimus V4. 

“So we’re going to launch on the fastest production ramp of any product of any large complex manufactured product ever, starting with building a one-million-unit production line in Fremont. And that’s Line one. And then a ten million unit per year production line here,” Musk stated. 

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How big Optimus could become

During Tesla’s Q4 and FY 2025 earnings call, Musk offered additional context on the potential of Optimus. While he stated that the ramp of Optimus’ production will be deliberate at first, the humanoid robot itself will have the potential to change the world. 

“Optimus really will be a general-purpose robot that can learn by observing human behavior. You can demonstrate a task or verbally describe a task or show it a task. Even show it a video, it will be able to do that task. It’s going to be a very capable robot. I think long-term Optimus will have a very significant impact on the US GDP. 

“It will actually move the needle on US GDP significantly. In conclusion, there are still many who doubt our ambitions for creating amazing abundance. We are confident it can be done, and we are making the right moves technologically to ensure that it does. Tesla, Inc. has never been a company to shy away from solving the hardest problems,” Musk stated. 

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