Tesla sold 1.8 million electric vehicles in 2023

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Tesla found new homes for 1.8 million electric vehicles last year, it revealed on Tuesday afternoon. That will no doubt please CEO Elon Musk—it means the company has met its sales volume goal given to investors when it released its 2022 financial results at the end of last January.

Tesla built 494,989 vehicles in the last quarter of 2023, of which 18,212 were the more expensive but aging Models S and X. More importantly to the bottom line, Tesla built 476,777 Models 3 and Y. For the same three months, it delivered 484,507 EVs, of which 461,538 were the popular Models 3 and Y.

Cumulatively, Tesla built 1,845,985 EVs—1,775,159 Models 3 and Y and 70,826 Models S and X. And it delivered 1,808,581 EVs (1,739,707 Models 3 and Y; 68,874 Models S and X)—meeting the 2023 sales goal of 1.8 million cars sold.

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It’s rebels vs Imperialist forces in Rebel Moon Part 2: The Scargiver trailer

Prepare yourself for Zack Snyder's Rebel Moon Part 2: The Scargiver.

Zack Snyder's Rebel Moon Part 1: Child of Fire racked up an impressive 63 million views over its first ten days on Netflix, despite decidedly negative critical reviews. Now we've got the first full trailer for Rebel Moon Part 2: The Scargiver, continuing the saga of our intrepid heroine Kora (Sofia Boutella) and her plucky band of allies as they take on the imperialist Motherworld.

(Spoilers for Part 1 below.)

As we reported previously, years ago, director Zack Snyder had an idea for an epic Star Wars movie that he pitched to Lucasfilm. That project never panned out for a variety of reasons. But the idea continued to germinate until Netflix got on board. Apart from Star Wars, Snyder has said his influences include the films of Akira Kurosawa, especially Seven Samurai, and The Dirty Dozen. He has set his epic saga in a universe controlled by the ruthless and corrupt government of the Mother World (the Imperium) with an army led by one Regent Balisarius (Fra Fee). The rebel moon of the title is called Veldt.

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It’s a new year, and these are now the only EVs that get a tax credit

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It's a new year, and while few of us still have the headache of needing to remember to write the new year on checks, 2024 brings a new annoyance of sorts. As of yesterday, tough new US Treasury Department rules concerning the sourcing of electric vehicle batteries went into effect; as a result, most of the battery and plug-in hybrid EVs that were eligible for the Internal Revenue Service's clean vehicle tax credit until Sunday have now lost that eligibility.

Under the federal government's previous program to incentivize the adoption of plug-in vehicles, it offered a tax credit, up to $7,500, based on the battery capacity of a BEV or PHEV, and once a car maker sold more than 200,000 plug-in vehicles, it lost eligibility for the tax credit—Only Tesla and General Motors reached this threshold.

Changes came as part of the Inflation Reduction Act of 2022 and went into effect at the start of 2023. Thanks to heavy industry lobbying, credits linked to union-made EVs went by the wayside, with US Senator Joe Manchin acting as point man for companies like Toyota that sought to slow down the EV transition.

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2024 may be a year of reckoning for Apple’s $85 billion services business

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Apple faces a legal reckoning in 2024, with a series of regulatory decisions by US and EU authorities over the coming months set to determine the future of its $85 billion-a-year services business.

The biggest hit to the iPhone maker could come from a US antitrust trial against Google, where it emerged that the fellow tech giant had paid more than $26 billion in 2021 to make its search engine the default on Apple devices and other smartphones and browsers.

Should Google lose the case, it could be forced to stop making regular payments to Apple, which Eric Seufert, an independent analyst, estimates as being worth a quarter of annual revenues earned by Apple’s services arm.

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Juno makes its first ultra-close flyby of the volcano-covered moon Io

Enlarge / Juno flyby of Io on Dec. 30, 2023. (credit: NASA)

On Saturday NASA's Juno spacecraft, which has been orbiting Jupiter for the better part of a decade, made its closest flyby of the innermost moon in the Jovian system.

The spacecraft came to within 930 miles (1,500 km) of the surface of Io, a dense moon that is the fourth largest in the Solar System. Unlike a lot of moons around Jupiter and Saturn, which have surface ice or subsurface water, Io is a very dry world. It is also extremely geologically active. Io has more than 400 active volcanoes and is therefore an object of great interest to astronomers and planetary scientists.

Images from the December 30 flyby were posted by NASA over the New Year holiday weekend, and they provide some of the clearest views yet of this hell-hole world. The new data will help planetary scientists determine how often these volcanoes erupt and how this activity is connected to Jupiter's magnetosphere—Io is bathed in intense radiation from the gas-giant planet.

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Here’s how the EPA calculates how far an EV can go on a full charge

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How does the US Environmental Protection Agency decide how far an electric vehicle can go on a single charge? The simple explanation is that an EV is driven until the battery runs flat, providing the number that goes on the window sticker. In practice, it's a lot more complicated than that, with varying test cycles, real-world simulations, and more variables than a book of Mad Libs, all in an effort to give you a number that you can count on to be consistent and comparable with other vehicles on the road.

The start of EPA mileage testing

The EPA started testing vehicle fuel economy in 1971, and that initial testing still plays a major role in how modern cars are measured.

The year before, President Richard Nixon signed the National Environmental Policy Act of 1969 (followed by the Clean Air Act of 1970) and established the EPA with a mandate that included lowering motor vehicle emissions. Part of the EPA's plan to reduce emissions was to let buyers know just how much fuel a car would use so they could cross-shop cars effectively.

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Study: the best free-throw shooters share these biomechanical traits

There's rarely time to write about every cool science-y story that comes our way. So this year, we're once again running a special Twelve Days of Christmas series of posts, highlighting one science story that fell through the cracks in 2020, each day from December 25 through January 5. Today: Using markerless motion capture technology to determine what makes the best free throw shooters in basketball.

Markerless motion capture technology shows the biomechanics of free-throw shooters. Credit: Jayhawk Athletic Peformance Laboratory.

Basketball season is in full swing and in a close game, the team that makes the highest percentage of free throws can often eke out the win. A better understanding of the precise biomechanics of the best free-throw shooters could translate into critical performance player performance improvement. Researchers at the University of Kansas in Lawrence used markerless motion capture technology to do just that, reporting their findings in an August paper published in the journal Frontiers in Sports and Active Living.

“We’re very interested in analyzing basketball shooting mechanics and what performance parameters differentiate proficient from nonproficient shooters,” said co-author Dimitrije Cabarkapa, director of the Jayhawk Athletic Performance Laboratory at the University of Kansas. “High-speed video analysis is one way that we can do that, but innovative technological tools such as markerless motion capture systems can allow us to dig even deeper into that. In my opinion, the future of sports science is founded on using noninvasive and time-efficient testing methodologies.”

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