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By hellowalkman · Posted
Our Universe's origin is indeed a Black Hole and not the Big Bang, reckons this new study by Sayan Sen Image by Yihan Wang via Pexels According to The Conversation, a new study published in Physical Review D challenges the common idea that the Big Bang was the start of everything. Instead, researchers suggest it might have been a rebound—a bounce—after a huge gravitational collapse forming a black hole. This “black hole universe” idea uses everyday physics to rethink cosmic origins. Instead of starting with expansion and tracing back to a mysterious singularity, the model looks at what happens when a large mass collapses under gravity, similar to how stars become black holes. But unlike the sharp singularities predicted by classical physics, this model uses quantum mechanics to show that the collapse doesn’t go on forever. The bounce is driven by the quantum exclusion principle, which prevents identical particles, such as fermions, from being squeezed into the same quantum state. As a result, the collapse hits a limit and then reverses, causing an outward bounce. According to the research team, “the bounce is not only possible – it’s inevitable under the right conditions.” The model explores a spherical collapse of mass M with an initial size χ_* inside a curved region defined by k ≡ 1/χₖ² ≤ 1/χ_²*. The material inside is treated as a perfect fluid that shifts from pressureless dust (P = 0) to a stable energy density ρG over time. This leads to a bounce at: R_B = (8πGρG / 3)^−1/2 After the bounce, the universe goes through rapid expansion, with the pressure P(ρ) acting like an inflation potential—similar to how standard cosmology describes early universe inflation and today’s dark energy. The model also predicts a small but noticeable positive curvature in space: −0.07 ± 0.02 ≤ Ωₖ < 0 This slight curve may come from the original over-density that started the collapse. It could help explain anomalies in the cosmic microwave background, such as the low quadrupole. To match this effect, the size of the original collapse region must be at least χₖ ≥ χ_ ≃ 15.9 Gpc*. Interestingly, the bounce happens inside the gravitational radius r_S = 2GM, which acts like a cosmological constant Λ from within. Outside, it still looks like a normal Schwarzschild black hole. Future missions such as Euclid could test the predicted curvature. Other projects, like Arrakihs, will study faint features including stellar halos and satellite galaxies, possibly tied to ancient compact objects like black holes that made it through the bounce. In this view, the Big Bang wasn’t the birth of everything—it was the start of a new cycle inside a black hole formed in a larger universe. As The Conversation puts it: “We are not witnessing the birth of everything from nothing, but rather the continuation of a cosmic cycle.” Source: The Conversation, American Physical Society This article was generated with some help from AI and reviewed by an editor. Under Section 107 of the Copyright Act 1976, this material is used for the purpose of news reporting. Fair use is a use permitted by copyright statute that might otherwise be infringing. -
By naap51stang · Posted
Surprised they didn't also say "upgrade to windows 11". -
By hellowalkman · Posted
Windows 11 KB5062785, KB5062683, KB5062688, KB5062693 setup, recovery updates released by Sayan Sen This week, Microsoft released the monthly security "Patch Tuesday" July updates for Windows 11 24H2, 23H2, and 22H2 under KB5062553 and KB5062552. The company also published dynamic updates alongside them. (Windows 10 dynamic updates have also been released.) Dynamic updates bring improvements to the Windows Recovery in the form of Windows Recovery Environment (WinRE) updates, also called Safe OS updates, as well as to the Setup binaries in the form of Setup updates. These Dynamic Update packages are meant to be applied to existing Windows images prior to their deployment. These packages include fixes to Setup.exe binaries, SafeOS updates for Windows Recovery Environment, and more. Dynamic Updates also help preserve Language Pack (LP) and Features on Demand (FODs) content during the upgrade process. VBScript, for example, is currently an FOD on Windows 11 24H2. Both setup and recovery updates were released. The changelogs are given below. First up we have the Setup updates: Up next, we have the Safe OS recovery updates and this time Microsoft does note a fix which is a rarity. The company says that it resolves a USB-C issue on 24H2 Arm64 systems: Microsoft notes that the Recovery updates as well as the Setup updates will be downloaded and installed automatically via the Windows Update channel. You can also avail them manually on Microsoft's Update Catalog website: KB5062785, KB5062683, KB5062688, and KB5062693. -
By hellowalkman · Posted
Microsoft reiterates it may never truly be able to fix Windows Update 0x80070643 error by Sayan Sen Back in April, Microsoft released Windows 10 dynamic updates under KB5057589, KB5055674, KB5056474, KB5055769, KB5055768, and KB5055770. The one for KB5057589 was one for WinRE (Windows Recovery Environment), and it kept failing with the 0x80070643 error code despite user PCs satisfying the necessary requirement of having more than 250 MB disk space for the recovery partition. Microsoft closed the issue in April itself as it promised a better update that won't fail later. The tech giant at the time said that Windows "will not offer this update again" if you had already installed it. However, with the monthly Dynamic updates (ones for Windows 11 also released) that are accompanying the July 2025 Patch Tuesday updates for Windows 10, Microsoft has released a new WinRE update again, this time under KB5063523. The company writes in its release notes: Microsoft adds that the update fixed the previous issue although the error code "0x80070643" will still pop up: As Microsoft points out, this is not the only dynamic update Microsoft released. Alongside, Windows recovery update, setup updates have also been released. For those not familiar, these Dynamic Update packages are meant to be applied to existing Windows images prior to their deployment. These packages include fixes to Setup.exe binaries, SafeOS updates for Windows Recovery Environment, and more. Dynamic Updates also help preserve Language Pack (LP) and Features on Demand (FODs) content during the upgrade process. VBScript, for example, is currently an FOD on Windows 11 24H2. First up, we have the setup updates: Up next, we have the recovery updates: The necessary updates will be downloaded and installed automatically from the Windows Update channel. -
By fishnet37222 · Posted
I still say it's not real until they do it in the real world and not just in a simulation.
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