Month: August 2021

Enlarge / The launch vehicle stage adapter for NASA’s Space Launch System rocket is integrated with the core stage in June. (credit: NASA)

Publicly NASA is still holding onto the possibility of a 2021 launch date for the debut flight of its Space Launch System rocket. This week, an agency spokesperson told Ars that "NASA is working toward a launch for the Artemis I mission by the end of this year."

However, a source said the best-case scenario for launching the Artemis 1 mission is spring of next year, with summer the more realistic target for a test flight of the heavy lift rocket and Orion spacecraft. The space agency is already running about two months behind internal targets for testing and integrating the rocket at Kennedy Space Center, and the critical pre-flight tests remain ahead.

NASA's Kathryn Hambleton acknowledged that the space agency has seen schedule slips. "The agency continues to monitor the rise of COVID cases in the Kennedy area, which combined with other factors such as weather and first time operations, is impacting our schedule of operations," she said. "Moving step by step, we are progressing toward launch while keeping our team as safe as possible."

Enlarge (credit: Microsoft)

Windows 11 is no longer merely "coming this fall." Microsoft will begin releasing the new operating system to the public on October 5, starting with newer PCs (and PCs being sold in stores) and then rolling out to other supported systems over the next nine or so months. The company also says that the Amazon-powered Android app support that's coming to Windows 11 won't be ready for public consumption at launch; Microsoft will offer "a preview [of Android apps in the Microsoft Store] for Windows Insiders over the coming months."

Like recent Windows 10 updates, Windows 11 will have a phased rollout through Windows Update—most PCs won't begin to see and automatically install the update on October 5. Microsoft says that new PCs will be the first to upgrade, followed by older compatible PCs, "based on intelligence models that consider hardware eligibility, reliability metrics, age of device and other factors." As with Windows 10 updates, you'll be able to download an ISO file to initiate the upgrade yourself (Microsoft also offers tools like the Windows Update Assistant to manually trigger upgrade installs, which we assume it will do for Windows 11, too). All compatible PCs should be offered the update by mid-2022.

For PCs that don't meet Microsoft's stringent system requirements—a recent 64-bit Intel, AMD, or Qualcomm processor, enabled Secure Boot support, and a TPM 2.0 module along with 4GB or more of RAM and 64GB or more of storage—Microsoft has been cagey. Neither today's announcement nor a post from last week explaining the security requirements mentions being able to install Windows 11 on unsupported PCs. But Microsoft told reporters that it won't disallow installation on incompatible systems as long as you install the operating system manually, before the company can later assert its right to withhold security and driver updates on those PCs if it wants to.

Enlarge (credit: Bloomberg / Getty Images)

Wind power isn't the largest part of the United States' energy mix, but it grew over the last year, according to the Wind Technologies Market Report. The renewable energy source grew to more than 8 percent of the country's electricity supply—reaching 10 percent in a growing number of states—and saw a whopping $25 billion in investments in what will translate to 16.8 gigawatts of capacity, according to the report.

Put out by the US Department of Energy, the sizeable report draws upon a variety of data sources for its finding, including government data from the Energy Information Administration, trade data from the US International Trade Commission, and hourly pricing data from the various system operators. “The report itself covers the entire gamut of the US wind industry,” Mark Bolinger, a research scientist at Lawrence Berkeley National Laboratory and one of the authors of the report, told Ars.

Bigger is sometimes better

According to the report, the performance of wind power operations in the US has improved a great deal. We can measure this based on capacity factor, a ratio of the amount of energy a turbine actually produces compared to the amount it could have produced if it ran at its peak constantly. For recently constructed wind power projects, the average capacity factor has now cleared 40 percent. The biggest gains in this area, however, are seen in the US' “wind belt,” a region that receives a large amount of wind, stretching from the Dakotas to Texas.