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Analysis of JWST Data Finds - Old Galaxies in a Young Universe?

Slashdot.org - 1 hour 28 min ago

Two astrophysicists at Spain's Instituto de Astrofísica de Canarias analyzed data from the James Webb Space Telescope — the most powerful telescope available — on 31 galaxies with an average redshift of 7.3 (when the universe was 700 million years old, according to the standard model). "We found that they are on average ~600 million years old old, according to the comparison with theoretical models based on previous knowledge of nearby galaxies..." "If this result is correct, we would have to think about how it is possible that these massive and luminous galaxies were formed and started to produce stars in a short time. It is a challenge." But "The fact that some of these galaxies might be older than the universe, within some significant confidence level, is even more challenging." The most extreme case is for the galaxy JADES-1050323 with redshift 6.9, which has, according to my calculation, an age incompatible to be younger than the age of the universe (800 million years) within 4.7-sigma (that is, a probability that this happens by chance as statistical fluctuation of one in one million). If this result is confirmed, it would invalidate the standard Lambda-CDM cosmological model. Certainly, such an extraordinary change of paradigm would require further corroboration and other stronger evidence. Anyway, it would be interesting for other researchers to try to explain the Spectral Energy Distribution of JADES-1050323 in standard terms, if they can ... and without introducing unrealistic/impossible models of extinction, as is usually done. The findings are published in the journal Monthly Notices of the Royal Astronomical Society.

Vim 9.2 Released

Slashdot.org - 4 hours 28 min ago

"More than two years after the last major 9.1 release, the Vim project has announced Vim 9.2," reports the blog Linuxiac: A big part of this update focuses on improving Vim9 Script as Vim 9.2 adds support for enums, generic functions, and tuple types. On top of that, you can now use built-in functions as methods, and class handling includes features like protected constructors with _new(). The :defcompile command has also been improved to fully compile methods, which boosts performance and consistency in Vim9 scripts. Insert mode completion now includes fuzzy matching, so you get more flexible suggestions without extra plugins. You can also complete words from registers using CTRL-X CTRL-R. New completeopt flags like nosort and nearest give you more control over how matches are shown. Vim 9.2 also makes diff mode better by improving how differences are lined up and shown, especially in complex cases. Plus on Linux and Unix-like systems, Vim "now adheres to the XDG Base Directory Specification, using $HOME/.config/vim for user configuration," according to the release notes. And Phoronix Mcites more new features: Vim 9.2 features "full support" for Wayland with its UI and clipboard handling. The Wayland support is considered experimental in this release but it should be in good shape overall... Vim 9.2 also brings a new vertical tab panel alternative to the horizontal tab line. The Microsoft Windows GUI for Vim now also has native dark mode support. You can find the new release on Vim's "Download" page.

Apple Patches Decade-Old IOS Zero-Day, Possibly Exploited By Commercial Spyware

Slashdot.org - 8 hours 28 min ago

This week Apple patched iOS and macOS against what it called "an extremely sophisticated attack against specific targeted individuals." Security Week reports that the bugs "could be exploited for information exposure, denial-of-service (DoS), arbitrary file write, privilege escalation, network traffic interception, sandbox escape, and code execution." Tracked as CVE-2026-20700, the zero-day flaw is described as a memory corruption issue that could be exploited for arbitrary code execution... The tech giant also noted that the flaw's exploitation is linked to attacks involving CVE-2025-14174 and CVE-2025-43529, two zero-days patched in WebKit in December 2025... The three zero-day bugs were identified by Apple's security team and Google's Threat Analysis Group and their descriptions suggest that they might have been exploited by commercial spyware vendors... Additional information is available on Apple's security updates page. Brian Milbier, deputy CISO at Huntress, tells the Register that the dyld/WebKit patch "closes a door that has been unlocked for over a decade." Thanks to Slashdot reader wiredmikey for sharing the article.