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SpaceX almost ready to launch NASA asteroid impact spacecraft
Update: The NASA official quoted saying that the DART spacecraft had arrived at Vandenberg on September 27th appears to have been incorrect and may have accidentally confused the arrival of an “advance team” with the arrival of the spacecraft itself.
Science communicator and author David Brown was reportedly on-site on September 29th to watch as the DART spacecraft was carefully packaged for the journey from Maryland’s Johns Hopkins University to its California launch site, obviously making a VSFB arrival two days prior impossible. Nevertheless, now stowed inside an environmentally-controlled shipping container, DART should still arrive at Vandenberg within the next week or two.
Revealed as a side note during live coverage of the space agency’s successful Landsat-9 launch, NASA says that the Double Asteroid Redirect Test (DART) spacecraft has arrived at Vandenberg Space Force Base (VSFB) ahead of a SpaceX Falcon 9 launch less than two months from now.
Weighing around 690 kg (~1500 lb) at liftoff, NASA confirmed that the DART spacecraft and its Italian-built LICIACube smallsat companion are on track to launch out of SpaceX’s VSFB SLC-4E pad on a Falcon 9 rocket no earlier than (NET) November 23rd, 2021. Carrying its small passenger, DART will then make a beeline for binary asteroid pair Didymos and Dimorphos. Respectively measuring around 800 and 170 meters across, DART will ultimately target the smaller of the pair and accelerate to an impact velocity of ~6.6 km/s (4 mi/s or Mach 19).
DART will then rely on a built-in telescope and closed-loop targeting software to home in on and smash into Dimorphos, ultimately using the tiny asteroid system as a sort of sandbox to test theories of asteroid redirection that might one day help humans prevent catastrophic impacts with Earth.
Originally targeted to launch in June 2021 when NASA awarded SpaceX the $69M launch contract (now up to $73M after two small changes) in April 2019, DART has slipped approximately five months in the 2.5 years since when a few minor technical issues arose late in development. Impressively, almost none of those delays appear to have been caused by the COVID-19 pandemic, which cannot be said for a number of other NASA, US military, and commercial satellites and launches.
Set to cost a total of ~$250M including launch services, DART’s main purpose is to determine how exactly an asteroid behaves when impacted by a high-velocity spacecraft. Whereas depictions of asteroid “redirection” in popular science fiction tend to lean towards the “send an arsenal of nuclear bombs” approach, the reality is that bombing most asteroids and comets large enough to threaten the surface of Earth would add uncertainty more than it would mitigate the threat.
Given how little is actually known about the physical characteristics of asteroids, attacking one with a bomb could simply separate a killer asteroid into any number of smaller, still-deadly asteroids – now spread into a shotgun-like pattern of undetectable fragments instead of one large, visible object. Instead, most modern science on the matter now believes that the best route to redirection is a combination of early detection and a (relatively) low-energy impact. A bit like the concept of the butterfly effect, a relatively gentle impact (still akin to 2.5 tons of TNT with DART) years or decades in advance could drastically change the trajectory of the threatening asteroid or comet, causing it to miss Earth. DART won’t directly prevent an asteroid from impacting Earth but hitting the asteroid moon of a larger asteroid should effectively magnify the effect the tiny impact has on its orbital characteristics.
DART will also serve as a technology demonstration, debuting both satellite-class roll-out solar arrays and NASA’s self-developed NEXT-C electric propulsion system. With any luck, it will also help scientifically prove that humans could use a similar approach to save ourselves from a catastrophic space impact event years or decades from now.
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Tesla Cybercab display highlights interior wizardry in the small two-seater
Photos and videos of the production Cybercab were shared in posts on social media platform X.
The Tesla Cybercab is currently on display at the U.S. Department of Transportation in Washington, D.C., and observations of the production vehicle are highlighting some of its notable design details.
Photos and videos of the production Cybercab were shared in posts on social media platform X.
Observers of the Cybercab display unit noted that the two-seat Robotaxi provides unusually generous legroom for a vehicle of its size. Based on the vehicle’s video, the compact two-seater appears to offer more legroom than Tesla’s larger vehicles such as the Model Y, Model X, and Cybertruck.
The Cybercab’s layout allows Tesla to dedicate nearly the entire cabin to passengers. The vehicle is designed without a steering wheel or pedals, which helps maximize interior space.
Footage from the display also highlights the Cybercab’s large center screen, which is positioned prominently in front of the passenger bench. The display appears intended to provide entertainment and ride information while the vehicle operates autonomously.
Images of the vehicle also show an additional camera integrated into the Cybercab’s C-pillar. The extra camera appears to expand the vehicle’s field of view, which would be useful as Tesla works toward fully unsupervised Full Self-Driving.
Tesla engineers have previously explained that the Cybercab was designed to be highly efficient both in manufacturing and in operation. Cybercab Lead Engineer Eric E. stated in 2024 that the Robotaxi would be built with roughly half the number of parts used in a Model 3 sedan.
“Two seats unlocks a lot of opportunity aerodynamically. It also means we cut the part count of Cybercab down by a substantial margin. We’re gonna be delivering a car that has roughly half the parts of Model 3 today,” the Tesla engineer said.
The Tesla engineer also noted that the Cybercab’s cargo area can accommodate multiple golf bags, two carry-on suitcases, and two full-size checked bags. The trunk can also fit certain bicycles and a foldable wheelchair depending on size, which is quite impressive for a small car like the Cybercab.
Elon Musk
Elon Musk’s xAI wins permit for power plant supporting AI data centers
The development was reported by CNBC, citing confirmation from the Mississippi Department of Environmental Quality (MDEQ).
Mississippi regulators have approved a permit allowing Elon Musk’s artificial intelligence company xAI to construct a natural gas power plant in Southaven. The facility is expected to support the company’s expanding AI infrastructure tied to its Colossus data center operations near Memphis.
The development was reported by CNBC, citing confirmation from the Mississippi Department of Environmental Quality (MDEQ).
According to the report, regulators “voted to approve the permit” of xAI subsidiary MZX Tech LLC to construct a power plant featuring 41 natural gas-burning turbines “after careful consideration of all public comments and community concerns.”
The Mississippi Department of Environmental Quality stated that the permit followed a regulatory review process that included public comments and community input. Jaricus Whitlock, air division chief for the MDEQ, stated that the project met all applicable environmental standards.
“The proposed PSD permit in front of the board today not only meets all state and federal permitting regulations, but goes above and beyond what is required by law. MDEQ and the EPA agree that not a single person around our facilities will be exposed to unhealthy levels of air pollution,” Whitlock stated.
The planned facility will help provide electricity for xAI’s AI computing infrastructure in the Memphis region.
The Southaven project forms part of xAI’s efforts to scale computing capacity for its artificial intelligence systems.
The company currently operates two major data centers in Memphis, known as Colossus 1 and Colossus 2, which provide computing power for xAI’s Grok AI models. xAI is also planning to build another large data center in Southaven called Macrohardrr, which would be located in a warehouse previously used by GXO Logistics.
Large-scale AI training requires substantial computing power and electricity, prompting technology companies to develop dedicated energy infrastructure for their data centers.
SpaceX President Gwynne Shotwell previously stated that xAI plans to develop 1.2 gigawatts of power capacity for its Memphis-area AI supercomputer site as part of the federal government’s Ratepayer Protection Pledge. The commitment was announced during an event with United States President Donald Trump.
“As part of today’s commitment, we will take extensive additional steps to continue to reduce the costs of electricity for our neighbors. xAI will therefore commit to develop 1.2 GW of power as our supercomputer’s primary power source. That will be for every additional data center as well. We will expand what is already the largest global Megapack power installation in the world,” Shotwell said.
“The installation will provide enough backup power to power the city of Memphis, and more than sufficient energy to power the town of Southaven, Mississippi where the data center resides. We will build new substations and invest in electrical infrastructure to provide stability to the area’s grid.”
Elon Musk
Tesla China teases Optimus robot’s human-looking next-gen hands
The image was shared by Tesla AI’s account on Weibo and later reposted by Tesla community members on X.
A new teaser shared by Tesla’s China team appears to show a pair of unusually human-like hands for Optimus.
The image was shared by Tesla AI’s account on Weibo and later reposted by Tesla community members on X.
As could be seen in the teaser image, the new version of Optimus’ hands features proportions and finger structures that look strikingly similar to those of a human hand. Their appearance suggests that they might have dexterity approaching that of a human hand.
If the image reflects a new generation of Optimus’ hands, it could indicate Tesla is continuing to refine one of the most critical components of its humanoid robot.
Hands are widely viewed as one of the most difficult engineering challenges in robotics. For Optimus to perform complex real-world work, from manufacturing tasks to household activities, its hands would need to be the best in the industry.
Elon Musk has repeatedly described Optimus as Tesla’s most important long-term product. In posts on social media platform X, Musk has stated that Optimus could eventually become the first real-world Von Neumann machine.
In theory, a Von Neumann machine is a self-replicating system capable of building copies of itself using available materials. The concept was originally proposed by mathematician John von Neumann in the mid-20th century.
“Optimus will be the first Von Neumann machine, capable of building civilization by itself on any viable planet,” Musk wrote in a post on X.
If Optimus is expected to carry out complex work autonomously in the future, high levels of dexterity will likely be essential. This makes the development of advanced robotic hands a key step towards Musk’s long-term expectations for the product.
Tesla Cybercab display highlights interior wizardry in the small two-seater
Elon Musk’s xAI wins permit for power plant supporting AI data centers
