Live: Artemis II Launch Day Updates

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The Artemis II mission has successfully deployed the Orion spacecraft's solar array wings, completing a key configuration step for the mission. The spacecraft is now preparing for the perigee raise maneuver and apogee raise burn to increase its orbit and prepare for deep-space operations.

A new C++ back end for ocamlc

https://opengraph.githubassets.com/4952a59bb085591aea6dbb8bce7e06140b74b5f7e1ed1bc636f362ebd587e15b/ocaml/ocaml/pull/14701
The suggestion cannot be applied due to various reasons including no code changes, viewing a subset of changes, and pull request status. It cannot be added to a batch for a single commit.

Quantum computing bombshells that are not April Fools

https://s0.wp.com/_si/?t=eyJpbWciOiJodHRwczpcL1wvc2NvdHRhYXJvbnNvbi5ibG9nXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIxXC8xMFwvY3JvcHBlZC1KYWNrZXQuZ2lmIiwidHh0IjoiU2h0ZXRsLU9wdGltaXplZCIsInRlbXBsYXRlIjoiZWRnZSIsImZvbnQiOiIiLCJibG9nX2lkIjoxMjk1MjA1ODB9.siOtN7gHw4tefA_rZickBw4GfI6tPxGgOQ1AXr2ZoOQMQ
Caltech and Google announced quantum computing breakthroughs, lowering overhead for fault-tolerance and Shor's algorithm. This may make Bitcoin signatures vulnerable to quantum attack sooner than expected.

DRAM pricing is killing the hobbyist SBC market

https://www.jeffgeerling.com/blog/2026/dram-pricing-is-killing-the-hobbyist-sbc-market/raspberry-pi-price-increase-since-launch.jpg
Raspberry Pi increased prices for LPDDR4 RAM Pis, making high-end SBCs unaffordable for hobbyists. The hobbyist SBC market is dying due to high DRAM prices, with vendors like Radxa being the only exception.

EmDash – A spiritual successor to WordPress that solves plugin security

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Cloudflare's EmDash is a new, open-source CMS built on Astro, aiming to replace WordPress with a more secure, serverless, and AI-friendly platform. EmDash offers improved security, scalability, and ease of use, with features like plugin sandboxing, dynamic workers, and AI-driven content management.

Fast and Gorgeous Erosion Filter

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The user explains an erosion technique for generating virtual landscapes, which involves using a special kind of noise to produce branching gullies and ridges while allowing fast and GPU-friendly evaluation. The technique has been developed and refined over time, with various approaches and tweaks to address issues such as chaotic distortions, inconsistent gully magnitudes, and non-straight gullies.

Set the Line Before It's Crossed

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To set clear boundaries, define lines and actions beforehand, and communicate them to others. Establishing accountability through methods like trusted partners or automation can help enforce actions when boundaries are crossed.

Show HN: Git bayesect – Bayesian Git bisection for non-deterministic bugs

https://opengraph.githubassets.com/5d8f356b7ecef93e75eb578fa9a59d990c25b37a3ac013f950f0145649ffc14b/hauntsaninja/git_bayesect
git_bayesect uses Bayesian inference to identify commits introducing changes, with greedy minimisation of expected entropy and Beta-Bernoulli conjugacy. It sets priors based on commit messages and diffs to handle unknown failure rates.

AI for American-produced cement and concrete

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Meta is releasing an AI model for designing concrete mixes, Bayesian Optimization for Concrete (BOxCrete), to help US producers use domestic materials. The model improves mix design speed and sustainability, reducing US reliance on imported cement.

Signing data structures the wrong way

Snowpack is a system that uses random, immutable 64-bit domain separators in the IDL to prevent domain separation bugs in cryptographic data. It ensures canonical encodings and guarantees that the sender and receiver agree on the type of data, making it a simple and effective solution for serialization of inputs to cryptographic functions.

Ask HN: Who is hiring? (April 2026)

Here are the job postings summarized in 2 concise English sentences each, not exceeding 200 characters:

Trinity Large Thinking

https://openrouter.ai/arcee-ai/trinity-large-thinking/opengraph-image-1oizug?93a901deb030ed0e
routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime. Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length. OpenRouter supports reasoning-enabled models that can show their step-by-step thinking process. Use the reasoning parameter ...

The revenge of the data scientist

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The data scientist role is not over, but its work has shifted from model training to experiment setup, debugging, and metric design. Data scientists still play a crucial role in evaluating AI systems and driving application-specific metrics.

Show HN: Dull – Instagram Without Reels, YouTube Without Shorts (iOS)

A browser strips out social media features designed to keep you scrolling, offering content filters, time limits, and more on-device. It's a tool that puts you in charge of what you see, without accounts, servers, or wellness features.

SpaceX files to go public

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StepFun 3.5 Flash is #1 cost-effective model for OpenClaw tasks (300 battles)

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A public benchmark for evaluating whether AI agents can complete real workflows. Compare model performance and cost-effectiveness on real agent tasks.

Scientists crack a 20-year nuclear mystery behind the creation of gold

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Scientists at the University of Tennessee have made three key discoveries about how unstable atomic nuclei decay during the rapid neutron-capture process that creates heavy elements like gold. Their findings could improve models of stellar events and predict the behavior of exotic atomic nuclei.

InspectMind AI (YC W24) Is Hiring

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InspectMind AI is building an AI Plan Checker to review construction plans and find issues before building. The company is seeking a software engineer to improve accuracy and ship features quickly using AI coding agents.

Ariane 6 user's manual [pdf]

Arianespace is a commercial launch services provider offering a range of launch vehicles including Ariane 5, Ariane 6, Soyuz, Vega, and Vega-C. The company has over 38 years of experience and has signed more than 440 contracts.

The Windows equivalents of the most used Linux commands

Windows cmd has similar commands to Linux for network troubleshooting and management. Equivalent commands include netstat -ano for process ID and C:\Program Files\Wireshark\wireshark.exe for packet capture.

BurgerDisk News

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Since the end of the Kickstarter, a few people who missed it contacted me to get a device. A few people also expressed frustration at wanting to get one, but finding the shipping cost to USA off-putting. The first thing is solved: I have opened a small web shop on my site. The second thing is being solved: I have contacted Joe of Joe’s Computer Museum, and he’s interested in distributing ...

Jax's true calling: Ray-Marching renderers on WebGL

User is using JAX for GPU accelerated graphics rendering with Signed Distance Functions (SDF) and auto-vectorization. They're exploring its potential for higher-level DSLs and geometric algebra.

ZomboCom stolen by a hacker, sold, now replaced with AI-generated makeover

User needs to register or sign in with developer credentials and ensure a unique User-Agent string to access the application. Alternatively, try resetting to default User-Agent or file a ticket for assistance.

Show HN: Flight-Viz – 10K flights on a 3D globe in 3.5MB of Rust+WASM

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Swappa.com for GrapheneOS compatible devices – Stay Away

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SolveSpace (open source 2D/3D CAD) working on Windows 2000 (2025)

https://user-images.githubusercontent.com/84055840/117909285-57aee500-b2b0-11eb-887d-196a7cb09fbb.jpg
System information SolveSpace version: Operating system: Expected behavior The program open. Actual behavior The error message to open solvespace im my windows 10 as is in attached image. The vc_redist.x86.exe is installed. Additional in...

How-to guide: Commissioning a Sensor Physics R&D Lab

Windows 95 defenses against installers that overwrite a file with an older one

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Windows 95 had a backup directory to prevent installers from overwriting system files. It checked for mistakes after installers finished and restored the original files if necessary.

Show HN: Zerobox – Sandbox any command with file, network, credential controls

https://raw.githubusercontent.com/afshinm/zerobox/refs/heads/main/packages/zerobox/assets/sandbox-flow.png
Zerobox is a tool for credential injection and sandboxing processes, allowing secrets to be passed to specific hosts without being visible to the process. It provides features like environment variable inheritance, network proxying, and restricted access to user data and system libraries.

Montana referendum to outlaw corporate campaign contributions [video]