Space Flight

Today we are working at Moxy Ostbahnhof, a beautiful air conditioned location near Ostbahnhof with big desks, booths and available food/drinks. **Cost:** There is no payment required, but it is common courtesy to buy drinks or something from the people providing the space. If you want to chit chat with out coworkers, please check out our Telegram channel: **[https://spam-destroyer.com/check/jelly](https://spam-destroyer.com/check/jelly)** 😴 Tired of working by yourself? 🌡️ Too hot to work at home? 🍫 Do the contents of your fridge, or housework, distract you while working from home? 💻 Come join other freelancers and remote workers for coworking! ☕️ There are no membership requirements, free WiFi, some power sockets, a large desk, some affordable coffee, toasted sandwiches and drinks! ⏰ We'll be there from 11:00, but feel free to stop by any time. The venue is open in the morning too. • DO WE HAVE PERMISSION? • Yes, we have permission to use the hotel as a coworking spot. So long as we are paying customers, they are happy for us to use their location for coworking between the hours of 11:00 to 17:00. They're sometimes (but not always) quite busy and short on tables and chairs outside of those hours. • WHAT TO BRING • Whatever you need to work on your own project / tasks :) • QUESTIONS? • Join our Telegram chat group to ask any questions: [https://spam-destroyer.com/check/jelly](https://spam-destroyer.com/check/jelly) • MORE EVENTS? • To have more events, we need more organisers. If you would like to help out, please get in touch [😀](https://emojipedia.org/grinning-face/)

The longest day of the year is comming and let's another Kotlin meetup. This time we geather at N26! **⚠️⚠️⚠️ Due to a venue policy please submit the following form for additional details. Without it, you won't be allowed inside the venue:** https://forms.gle/XjqVXkD3FARCM6jA8 **Line-Up:** 👉 **TestBalloon: Kotlin testing is easier (and more fun) than you think** *by Oliver Okrongli* You want an easier way to write tests? Parameterize tests in plain Kotlin? Reuse a series of tests? Easily extend own your test setup? Have first-class support on all platforms? All without struggling with a huge framework API? TestBalloon is a new test framework that brings the power of Kotlin to your test setup. With a small-surface API, a hierarchical test structure and an extensible DSL, TestBalloon makes Kotlin testing easy, even at scale. Oliver, the author of TestBalloon, will show testing patterns and strategies and lots of practical examples, ranging from simple unit tests with less boilerplate to advanced testing with coroutines and generated data. This talk is based on insights first presented at KotlinConf 2026 in Munich. At the end of this talk, you’ll be able to firmly the answer the question: "How can I master Kotlin testing with ease, and make my team release with joy and confidence, every time?" 👉 **One Topic to Rule 'Em All** *by Yonatan Karp-Rudin* Kafka delivered every event exactly once, in order, and lost nothing. So what broke? This talk follows that question into the gap most event-driven systems leave open: what actually guarantees the order your domain depends on, and what quietly doesn't. We start from a real log line, find the crack in an architecture that looks clean and ships fast, and rule out the fix everyone reaches for first. The cure turns out to be one sentence of domain thinking plus one line of config, though the Schema Registry will fight you on the way there. A live demo runs the bug and the fix back to back: same load, same hero, one change. If you build with Kafka, you have probably shipped a version of this bug. You will leave able to spot it and fix it before it pages someone. 👉 **He Who Must Not Be Migrated** *by Nicola Corti* **Speaker Bios:** 🗣 Oliver Okrongli Oliver has been shaping and creating software from backend to frontends. He is the author of TestBalloon, a next-generation Kotlin test framework. Before, he has helped to maintain Kotest, and contributed to several libraries of the Kotlin ecosystem as well as the Kotlin compiler. Can be found on GitHub (OliverO2) and the kotlinlang Slack (Oliver O). When not developing, he is most probably in deep talks, dancing, snowboarding or F18 catamaran sailing whenever he gets a chance. 🗣 Yonatan Karp-Rudin Yonatan Karp-Rudin is a Staff Engineer at Billie, building event-driven systems in Kotlin and Spring Boot. Off the clock, he plays with AI agents and builds random tooling, trying to hand off as much of his own workflow to a machine as he can. The rest of the time he's brewing mead or deep in a video game. **🗣 TBD**

We are happy to invite you to our next iOS meetup. This time we cooperate with the amazing 42 Berlin to share the knowledge and experience in iOS development. 18:00 Doors open 18:30 Welcome on campus **18:45** **— Sebastian Hagedorn, director of Engineering at Clue, presents "The Sensitive App".** Is your app really working, or just not crashing? “The Sensitive App” reports subtle bugs regardless of origin, and validates your assumptions in production so you don’t have to resort to guessing or praying. Learn how to turn your app into the first line of defense for your entire system’s health! **19:45** **— Dmitry Kurkin, lead Mobile Engineer at SuperNext, presents "Lessons that iOS Native Project could learn from ReactNative in agentic development".** We'll inspect the components of the React Native engine that provide faster feedback and boost agentic iterations.

Hello friends! We are the team of CaféIN, an inclusive café in Spandau, inviting you to our German language café - Sprach-CaféIN! 😎 With our language café, we aim to create a safe space for everyone to practice real German, without boring grammar exercises and books, but over coffee, conversations and new encounters :) Every person will be warmly welcome at our Sprach-CaféIN, regardless of background and origin. We are happy to see each and everyone of YOU! Our events are not about politics, as we aim to build bridges and bring people together through language and culture. Participation is free, but every participant is **required** to order at least one drink or snack at the café. This helps us support CaféIN and keep this special place alive.

Please reserve your spot by registering on the below link : https://www.eventbrite.com/e/join-biggest-community-investors-founders-berlin-online-tickets-1988380688164?aff=meetup QUESTIONS ? Pls Reach out to; Rose - +971528033410 ( WhatsApp Only)

Since October 2023 every single week on Thursday from 7.30 to 9PM we offer a meditation. Everyone is welcome. Donation Base: Min. 5EUR We learn about meditation (Shamata & Vipassana), practice different techniques together and take time to discuss our experiences with each other. Already more than 200 people came and learned how to meditate at Bodhispace. Adress: Bodhispace, Neckarstrasse 12, 12053 Berlin (Neukölln) Note: Everyone is welcome. Note: Now, bookable through USC (Urban Sports Club) or just come by and donate via cash, bank transfer or paypal, minimum donation of 5 EUR.

🌟 Join us for **"Don't Eat Alone"** – an event designed to transform your lunch break into a social feast! **Tired of solitary meals in front of the computer?** **Thriving to meet some new people and curious what it may bring to your life?** Just come, check and enjoy a delicious meal with friendly faces. Connect with like-minded individuals, engage in conversations, and make your lunchtime a memorable social experience. Mark your calendar, bring your appetite, and let's build connections, one meal at a time! 🍽️🤝✨ PAYMENTS: the meetup is free, but everyone pays for their meals. Here you can pay by card easily.

**Es sind alle willkommen! Wir treffen uns am 19.06. um 19:00 im Biergarten Eiswerder für einen entspannten Abend. Ich freue mich auf euch!** Wenn du neu in der Gruppe bist, lies dir bitte unsere Haupt-Gruppenseite durch. Danke! Wir möchten eine Gemeinschaft gründen, in der Menschen sich treffen, austauschen und gemeinsam neue Erfahrungen machen. Unser Ziel ist es, eine offene und fröhliche Atmosphäre zu schaffen, in der neue Bekanntschaften entstehen und interessante Gespräche geführt werden können. Bist du neu in Spandau und hast noch nicht richtig Anschluss gefunden? Lebst du schon länger in Spandau und möchtest nicht immer nach Mitte fahren, um Neues zu erleben? Wenn du Lust hast, Teil dieser Gemeinschaft zu werden und gemeinsam schöne Momente zu erleben, bist du herzlich eingeladen, dich uns anzuschließen! Wir freuen uns auf dich! :) \-\-\- **EN** \-\-\- **Everyone is welcome! We are meeting on the 19th of June starting from 7 pm at the Biergarten Eiswerder for a relaxed evening. Hope to see you soon!** If you are new in this group, please read our main group page. Thank you! We want to create a community where people can meet, exchange ideas and share new experiences. Our aim is to create an open and friendly atmosphere where you can find new friends and have interesting conversations. Are you new to Spandau and haven't really found your place yet? Have you been living in Spandau for a while and don't always want to travel to Mitte to experience something new? If you would like to become part of this community and experience some great moments together, you are welcome to join us! We are happy to see you soon! :)

At OpenSpace Networthing entrepreneurs from diverse disciplines, industries and nations meet to collaboratively develop solutions for challenges presented by participants. This month we will dive deeper into building digital products with Vibe Coding & AI with Varun Jain. We are building a networking-App: The "Tinder for Entrepreneurs" If you want to offer a workshop or present a topic for our members, write an email to alejandro.wagner@mlp.de Entrance is free! Bring in your expertise instead.

Everything you have been procrastinating for weeks (or more ;)), finally needs to be attacked. Work through your hardest challenges with the support of the FuN Berlin community. # Agenda: 09:00 Arrival + free coffee/tea (available at ImpactHub) 09:30 - 10:00 Introduction - share your challenge, Fuckups to be solved or Fuckups to be avoided 10:00 - 12:30 Focus Time 12:30 - 13:30 Lunch (we go out together) 13:30 - 16:30 Tandem: Team up and support each other with your problems or focus time 16:30 - 17:00 Share your results and commit to the next steps 📍 Impact Hub Berlin 🗓️ 22 May 💸 Free Spots are limited. Please only sign up, if you really are going to join💛 Powered by Speak TO and Fuckup Nights Berlin Sponsored by Impact Hub We are looking forward to meeting you!

[*Registration form required below*] **Interested in Japanese sword fighting or Japanese culture? Come join a trial and experience the traditional Samurai art at Katori Shintō-ryū in Schöneberg.** **Trial Fee**: **25€**/ session (2hr). Classes every Monday, Wednesday and Friday from 19:00 to 21:00. **!!SIGN UP HERE**: [Katori Shinto-ryū Berlin Sign-up (google.com)](https://docs.google.com/forms/d/e/1FAIpQLSeBt4A13VgnEcgQQ2PDaruthmYMRWineG4KtUCKsuC9KBsCUQ/viewform) Registration is required before your participation so that we can prepare enough training equipment. **Address**: Belziger Str. 25, 10823 Berlin. **No previous experience required!** The classes are in English and German. **Our website**: [Kenjutsu Berlin - Official school of Katori Shinto-ryu in Berlin (katoriberlin.org)](https://katoriberlin.org/) **Katori Shintō-ryū** is one of the oldest Japanese sword fighting traditions (koryū) still practised today and is recognized by the Japanese government as a cultural intangeable asset. The school was founded in the middle of the 15th century by Iizasa Chōisai Ienao at the Katori Shrine (Katori jingū) and has become the origin of numerous other martial arts schools over the course of its almost 600-year history. The training consists of the continuous repetition of fixed sequences of movements (kata) and includes the use of classic Japanese weapons such as the sword (iai-jutsu, battō-jutsu, ken-jutsu, ryōtō-jutsu, kodachi-jutsu), the long staff (bō-jutsu), the lance (naginata-jutsu) and the spear (sō-jutsu), as well as unarmed disciplines, tactics and spiritual aspects. **The Katori Berlin dojo** is the only official shibu of Otake Nobutoshi-shihan’s dojo Shinbukan in Germany and fully dedicated to the transmission and study of one martial tradition: Tenshinshō-den Katori Shintō-ryū. Through these efforts we aim to contribute to the cultural preservation of this martial tradition. The dojo has one officially appointed shidosha. **Our sensei**: Sebastian Graetz has been active in martial arts since 1997. After almost 15 years of taekwondo in Berlin, he started with Katori Shintō-ryū in Asia in 2014. Since then, he has studied in Japan with Ōtake Risuke-shihan and Ōtake Nobutoshi-shihan, and in Vietnam with Malte Stokhof-shihandai. In 2023, he received his Menkyo license and permission to set up a training group in Berlin the following year.

The Creative Code Jam is a monthly gathering of artists, makers, designers, illustrators, coders, musicians, performers, learners and anyone interested in the use of computing skills for artistic expression. The event is free and open to all, regardless of age, origin, gender or experience. The jam is an opportunity to meet likeminded people and get creative together in a relaxed and safe environment. Beginners and first-timers should feel especially welcome! WHAT SHOULD I EXPECT? **Bring a laptop** and/or anything you’d like to work on, whether it’s a personal project, an experiment, or a skill you want to learn. You can come with friends or meet new people here. There’s no set agenda: some people code, some sketch ideas, some collaborate, and others just chat and get inspired. SCHEDULE Doors open at noon, then we’ll have quick introductions so everyone can share what they’re planning to work on. Note: arriving on time is the best way to hear what others are up to ;) Around 6 pm, we gather to share what we’ve worked on during the day. BEGINNERS WELCOME! If you’re new to creative coding, we'll be happy to help you get started, and you can find beginner-friendly resources at [creativecode.berlin/learn](http://creativecode.berlin/learn). THIS IS YOUR SPACE We do our best to create a welcoming environment for all people regardless of race, ethnicity, color, religion, gender identity, sexual orientation, national origin, age, disability, or genetics. People from group generally underrepresented in open-source, art, and technology fields are warmly encouraged to come by. And if you know someone who might enjoy this meetup but isn’t sure it’s for them, let them know they’ll be welcome! SAFE SPACE POLICY We support the Berlin Code of Conduct: https://berlincodeofconduct.org/ Please make sure you agree with its content. ABOUT MotionLab.Berlin MotionLab.Berlin is Germany’s premier Innovation Hub & Makerspace – an ecosystem for Hardtech, art, creativity, and entrepreneurship. They are an international community with access to state-of-the-art machinery, prototyping machines, coworking spaces, offices, and production facilities. More info: https://motionlab.berlin/ ACCESSIBILITY MotionLab is located on the ground floor, with bathrooms on that same level, although unfortunately they are too small for wheelchairs. FOOD MotionLab has drinks and snacks for sale. Bio food can be found on LPG at Bouchéstr (\~200m). Their cantine has vegan, vegetarian and other food options until 8pm. DO I NEED TO SPEAK GERMAN? We speak mostly English so international guests are more than welcome! Our team also speaks French, Turkish, Italian, Spanish, Dutch, Finnish and German... though language availability may vary depending on which organizers are present :) CONTACT Raphaël de Courville team@creativecode.berlin +49 176 700 70572 or get in touch via [creativecode.berlin](https://creativecode.berlin/)

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

It is a bit too early for a midsummer night party, but on the weekend the weather forecast predicts thunderstorms. On Friday evening, we will celebrate midsummer night with a hike through Königswald and a picnic, including swimming, at Sacrower Lake. We’ll meet at the Wannsee ferry terminal (near Wannsee S-Bahn station) at 17:55 and take the ferry to Alt-Kladow at 6 pm. The ferry ride is covered by a standard BVG ticket (Zone B). (The next ferry leaves an hour later, so please allow about 5 minutes to walk from the S-Bahn station to the terminal.) From Alt-Kladow, we’ll follow freely this Komoot route: https://www.komoot.com/de-de/tour/1585149981 . I aim at a hike duration of 2 1/2 hours. After 12 km, we want to arrive at Sacrower Lake. Bring swimwear, food and drinks and, if you like, champagne to celebrate the best time of the year. At around 22:30 we leave the lake and head for the bus station in Alt-Kladow. For communication during the hike, I will send a Signal group link to all participants via private message a couple of hours before the hike. This timing is intended to prevent non-participants from misusing the link for unwanted advertising, which has happened in the past. Signal allows us to share our locations during the hike without involuntarily forwarding this information to the intelligence services of authoritarian or non-authoritarian states, but unfortunately the location sharing function does not include tracking, i.e. no continuous updates. For all other purposes, especially socialising and posting photos, please use the Telegram subgroup 'Event Chat & Photos': https://t.me/addlist/KAOk2PA4BDE0ZTY8 . The hike will take place if at least 6 people sign up. As long as there are more than 6 people, you can sign up and cancel as many times as you like. If there are 6 or less people, please avoid cancelling, as this might make the other participants feel insecure about whether the hike will take place (or whether there is something wrong with the hike and they should cancel as well --> Matthew effect - Wikipedia). If there are less than 6 participants, the hike will also take place unless the majority of the participants are in favor of canceling the hike.

Welcome to Drunken Philosophy, a casual, curious, social discussion club. Come grab a drink and a seat at The Oracle. **Optional topic for this meetup: Where is everybody?** In 1950 the physicist Enrico Fermi was talking about aliens over lunch and asked a question that still has not gone away: if the universe is so vast and so old, and even a fraction of those billions of stars have planets, where is everyone? By the numbers the galaxy should be crowded with civilizations. Instead we look up and hear silence. That gap between "they should be everywhere" and "we see no one" is the Fermi Paradox. One of the most unsettling answers is the idea of a **Great Filter**: somewhere on the road from dead chemistry to a galaxy-spanning civilization, there is at least one step that is almost impossible to get past. Maybe the filter is behind us. Maybe life starting at all, or simple cells becoming complex, or intelligence ever evolving, is the freak accident, and we already cleared the hard part. Or maybe the filter is ahead of us, and advanced civilizations reliably wipe themselves out before they spread. Here is the part that messes with people. If we ever found life somewhere else, even pond scum on Mars, most people would call it the greatest discovery in history. But it might be the worst possible news. It would mean life is common, the early steps are easy, and the hard step is still in front of us. So the eerie silence overhead might actually be the best sign we could ask for. **Questions to wrestle with:** * Is it better to be alone? Would you rather we find alien life and learn we are not special, or find nothing and quietly improve our odds of surviving? * Where do you bet the filter sits, behind us or ahead of us, and why? * If it is ahead of us, what is it? Nuclear war, climate collapse, AI, something we cannot even picture yet? And can we do anything about a filter we cannot see coming? * Two principles pull opposite ways here. The principle of mediocrity (the Copernican principle, Sagan's "no privileged place in the universe") says we are ordinary, so what happened on Earth probably happened everywhere, which makes the silence scream louder. The anthropic principle says of course we find ourselves somewhere life was possible, since we could not observe anything else, so our being here may say almost nothing about how common life is. Which lens do you trust, and does the silence still demand an answer once you account for observer selection? * And if we did confirm life out there and had to accept we are not special, what would that do to belief in a higher power, and would shedding (or keeping) that belief help or hurt our odds of pulling together as one species? * Does any of this change how you live, or how humanity should be spending its time and money right now? As always the prompt is optional. Come for the conversation, stay for the drinks, and bring your own questions.

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ Every week we get together and work technical skills and full contact spar. \ Almost all of the instructors have been in everything from street fights to the ring and some still compete in cage fighting. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 Outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1:30pm Wednesday 5:45pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ Wear workout clothes. \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ $10 per class $5 per class if you are wearing a club shirt Club shirts are $25 Hope to see you soon. \ let me know if you have any questions :)

We're going to GameArena! We'll be in-person at the GameArena Gateway for our monthly COGG Prototype and Play event. Come to play and showcase your games! We're back in the upper levels of the catwalk area. It'll be packed with lots of camaraderie playing your game(s) and other's games on the 2nd floor. Light snacks and water provided but you can buy food and drinks at the bar (alcoholic drink ID required). [www.game-arena.co](http://www.game-arena.co/) **Attendees:** Don't have a game to show? Not a problem! All are welcomed and invited from all ages and backgrounds. The more we can have to play test our games is all the better! **Developers:** Do you have a game that you would like to get critical feedback on? Would you like an excuse to work on a game with other talented artists, programmers, musicians, designers, and writers? Digital, table-top, non-experienced developers, and the like are welcomed! We'll provide signage for your game to help others learn more about your work. Wifi, outlets, tables, and seats (though standing tables also) are available. Come to the Prototype and Play workshop to collaborate and meet local game developers for an evening of epic and raw game play fun! Play works-in-progress, show off your own game, work with others to add polish to a game, or even lend your talents to other fellow developers. For this event, light snacks from the bar and water will be provided! Though you can purchase you own if you like at the bar: [https://www.game-arena.co/menu](https://www.game-arena.co/menu) Can use South Garage at the Gateway with a $5 voucher on your way out. 75 E 11th Ave, Columbus, OH 43201 [https://maps.app.goo.gl/UwgveUYG37Jy7RtS9](https://maps.app.goo.gl/UwgveUYG37Jy7RtS9) If you have any questions or comments, as always, feel free to reach out to us at [info@thecogg.com!](http://info@thecogg.com!/)

While some are still meeting online, this is an in person event. Please note that we have attendees of all levels of speaking, including some native speakers. All are welcome! Also, as we meet at the same time and place each week, many don’t RSVP on the app, so we will likely have more attendees than noted here. Note: if you are asked to pay and upgrade the Meetup app, this is not necessary. You can ignore this and still attend our meetings. Find us on our [Facebook group](https://www.facebook.com/share/g/1EKw86WJCp/?mibextid=wwXIfr).

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).