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Source channel @githubtrending · Post #14822 · Jun 12

#typescript#anki#chatgpt#deepseek#electron#evernote#knowledge_base#local_first#markdown#note_taking#notes_app#notion#obsidian#ocr#ollama#openai#pdf#s3#self_hosted#webdav SiYuan is a privacy-first personal knowledge management tool. It allows you to organize your thoughts and notes in a secure way, even offline. You can use features like block-level references, Markdown editing, and mathematical formulas. It also supports AI tools and has apps for Android, iOS, and HarmonyOS. SiYuan is open source and free for most features, making it a great choice for managing your personal knowledge securely. https://github.com/siyuan-note/siyuan

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Universe Mysteries 🪐

@cosmomyst · Post #369 · 10/03/2025, 08:21 PM

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🪐 The speed of light—299,792 kilometers per second—is an unbreakable cosmic speed limit, and even within our own Milky Way Galaxy, light takes about 27,000 years to travel from the supermassive black hole Sagittarius A* at the center to reach Earth. This vast timespan means that every glimpse we catch of events near Sagittarius A* shows us history already tens of thousands of years old, making each photon a snapshot from the deep past. ✨ #speedoflight⚡#milkyway⚡#saggittariusA⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space 👉subscribe Universe Mysteries 👉more Channels

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