Astrophysics

**This talk has completely sold out in advance and no door tickets will be available. You can catch the same talk at Highline RxR on March 15th, when plenty of tickets remain for sale.** [Profs and Pints DC](https://www.profsandpints.com/washingtondc) presents: **“Celtic Mythology,”** an exploration of the beliefs of a people whose influence spread far beyond the British Isles, with Larissa “Kat” Tracy, past president of the American Society of Irish Medieval Studies, former editor of its journal, *Eolas*, and visiting assistant teaching professor of English at the University of Maryland Baltimore County. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/dc-celtic-mythology](https://events.ticketleap.com/tickets/profsandpints/dc-celtic-mythology) .] The Celts inhabited lands stretching from the British Isles to parts of France and the Holy Roman Empire. Their influence can be seen in the art of the Vikings, in the rich oral and literary traditions of the Irish, Welsh and Bretons, and in the modern renaissance of Celtic culture. But who exactly were they? Get into the minds of the Celtic people by learning about their myths and beliefs with Larissa “Kat” Tracy, a scholar of Old and Middle Irish and Middle Welsh language and literature and published translator of Old Irish texts whose dynamic and fascinating talks have earned a considerable following among Profs and Pints fans. Dr. Tracy will delve into early medieval literary records that tell stories of the Tuatha de Danann, a godlike people who invaded Ireland and then were defeated themselves. She’ll offer a new perspective on faeries, banshees, and leprechauns by describing how the ancient Otherworldy people once believed to inhabit the western realms of Ireland were diminished or demonized into figures of popular folklore. You’ll learn how the ancient God of the Sun become one of the “little people” guarding cauldrons of gold and bestowing luck, how immortal beings of majestic stature shrank to small winged creatures in the back of gardens, and how supernatural women associated with the “people of the mound” became screaming harbingers of death. We’ll explore how medieval literary texts inspired later legends and became adapted into folklore. You’ll gain an understanding of how the medieval Catholic Church’s growing power led local people to reimagine their ancient gods and goddesses as Christian figures like Saint Bridget and Saint Patrick. You’ll gain an appreciation of how the Celts gave rise to living traditions that survive in modern popular culture through the preservation of languages, storytelling and music enjoyed all over the world, and renewed interest in goddesses like Brid and celebrations like Samhain. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image: From “Riders of the Sidhe,” a 1911 John Duncan painting of the Tuatha Dé Danann.

Join a diverse, inclusive group for a supportive, encouraging meeting to develop your speaking and leadership skills based on your personal goals. We meet on the 2nd floor of the Bethesda-Chevy Chase Regional Services (BCC) Building (on the corner of Old Georgetown Rd. and Edgemoor Ln.). It is the building with flags out front and across from the bus bay for the Bethesda metro station (Red line).

Ready to speak with confidence and lead with impact? Join **Silver Spring Toastmasters at White Oak Library**—where voices grow stronger, leaders are made, and personal growth takes center stage! Whether you’re a first-time visitor or a seasoned professional, you’ll find a welcoming community that celebrates progress and purpose. **Visit our next meeting and start your transformation today!**

DC iOS returns to the Capital One campus for another meetup! Come and meet with fellow Apple developers in the DC Area, enjoy some food, networking, and a great tech talk! PLEASE INDICATE IF YOU WILL BE ATTENDING IN PERSON OR OVER ZOOM. **Agenda:** • 5:40 PM - Doors Open (in-person attendees). **Don't forget your ID!** • 6:10 PM - Welcome (in-person and Zoom attendees) • 6:15 PM - **Talk: *Vibe Coding: A Skeptic's Guide to Finding Your Rhythm in AI-Assisted Development*** • 7:05 PM - Community Announcements & Networking • 8:00 PM - Doors close **Talk Description:** **Vibe Coding: A Skeptic's Guide to Finding Your Rhythm in AI-Assisted Development** Leo Dion I didn't trust AI hype. But building thousands lines of production Swift taught me: AI can get you 70% there but expertise is still required. From skeptic to pragmatic builder, I'll share when AI shines, where it fails, and how to thrive in the AI era. No hype, no doomerism—just reality. Zoom Link: https://us06web.zoom.us/j/83088929804?pwd=NinZzqyxxo8Cw1KSU1rMrPey8cxr2M.1 **Location:** Capital One, C2 Building 1680 Capital One Drive, Mclean VA, 22102 100A Visitor parking is either in the garage attached to 1680 Capital One Drive, or the open lot next to 1600 Capital One Drive. After that you will walk over to the main entrance of 1680 Capital One drive, and then walk around the right to the corner to room 100A For the metro, take the Silver Line to the McLean metro stop, then walk into main campus (about a 5 minute walk). From there, walk to the main entrance of 1680 and then go to room 100A **What you need to bring:** ID **When to arrive:** Doors open at 5:50pm ET Event will start at 6:10 pm ET **Will food and drinks be provided?** Yep! **Will there be rapid testing provided?** No **Will masks be required?** No

Holy Cross-Words Toastmasters Club (http://1341379.toastmastersclubs.org/) is open to all. The club meets 2nd and 4th Tuesday of each month at 5:30pm via Zoom Meeting: Meeting ID: 848 0115 8880 Password: 996403 In addition, on 4th Tuesday of each month for an in-person meeting at the Professional and Community Education Center (PCEC) at Holy Cross Hospital. The PCEC is located on the first floor of Holy Cross Hospital, 1500 Forest Glen Rd, Silver Spring, MD 20910

We're back. Brisk, 3- to 4-mile urban hike starting and ending at Whitlow's on the Wharf. We will hike around Hains Point before looping back to Whitlow's for drinks and food. Rideshare or public transportation recommended, closest metro L'Enfant.

In March of 2026, the long-time staple of Kubernetes ingress controllers, ingress-nginx, will stop receiving security patches and regular updates. For many Kubernetes operators, this is a forcing function for us to migrate to a new solution that supports the newer Gateway API. The ecosystem of solutions in this space is large and complex, and operators find themselves weighing a myriad of options. In this talk, I hope to answer many questions that we have had to answer in this space, such as: * What are the advantages of Gateway API over the Ingress API? * Which Gateway API Solution should you use for different scenarios * Why not simply migrate to another ingress controller? * Where does the AWS Load Balancer Controller fit in this new ecosystem? * What does support for WAF, ALB, NLB, etc. look like going forward? **Timeline:** **6:00 PM** \- Doors Open\. Please be prepared to show ID that matches your registration\. **6:30 PM - 7:30 PM** \- Speaker **7:30 PM - 8:00 PM** \- Networking **8:00 PM** \- Event ends\. Conversation continues at Highline for anyone interested\.

Earth and Sky Adventures at Sweet Run State Park generally begins with a short evening hike along with family friendly activities in the Education Building (Red barn). This is followed by astronomical viewing led by members of the Northern Virginia Astronomy Club. See link below for scheduled times, and contact Jim Crowley at [uuplink@aol.com](mailto:uuplink@aol.com) for any questions. [Sweet Run State Park](https://www.dcr.virginia.gov/state-parks/sweet-run)

Higher Grounds – Del Ray is part of a growing network of gatherings where we create space for thoughtful, authentic dialogue about what matters most. Whether we’re exploring the nature of happiness, the challenges and possibilities of midlife, spirituality, culture, capitalism, parenting, or the role of art and travel in a meaningful life, every conversation is shaped by the people in the room. There’s no set leader or rigid agenda—just a shared commitment to listen as much as we speak. We start with brief introductions focused on what makes you *you* (not your LinkedIn bio), then dive straight into whatever is on people’s minds. The direction of each meetup emerges organically, making every event unique. MANDATORY: PLEASE REVIEW OUR COMMUNITY GUIDELINES IN THE GROUP DESCRIPTION. Everyone is expected to engage in respectful conversations and listen deeply as well as share. We have a zero tolerance policy of sexual harassment and hate speech. Come ready to share, reflect, and connect with others in Del Ray who are also seeking deeper conversations. **Suggested Questions: Life Stages & Transitions** 1. What did you think you'd have figured out by now that you're still completely winging? 2. When did you realize your parents' advice was for a world that no longer exists? 3. What are you finally old enough to stop pretending to care about? **Suggested Questions: Identity After the Roles** 1. Who are you when nobody needs anything from you? 2. What dream keeps resurfacing even though the "practical" time has passed? 3. How do you handle having the freedom you always said you wanted? **Suggested Questions: AI & Being Human** 1. What human experiences will AI never truly understand? 2. If machines handled all your have-to's, what would you actually do? 3. What becomes more precious as everything becomes automated? **Suggested Questions: Belief & Meaning** 1. What certainties have you given up, and what rushed in to fill that space? 2. How has knowing someone who died changed how you live? 3. What do you believe now that would shock your younger self? **Suggested Questions: The Modern Psyche** 1. What anxiety do you carry that previous generations didn't have? 2. Which of your survival strategies are you ready to retire? 3. What uncomfortable truth about happiness did it take you years to accept? **Suggested Questions: Work & Purpose** 1. When did you stop believing that your job would complete you? 2. What would you do for work if money and status weren't factors? 3. How has your definition of "making it" changed over the years? **Suggested Questions: Relationships & Connection** 1. What relationship dynamic do you keep recreating, and why? 2. When did you realize your parents were just people trying their best? 3. What kind of loneliness doesn't go away even when you're with others? **Suggested Questions: Time & Mortality** 1. What are you running out of time to say or do? 2. How differently do you spend your time knowing it's finite? 3. What will you regret not trying, even if you fail? **Suggested Questions: Society & Culture** 1. What social convention do you follow even though it makes no sense? 2. Which generation do you understand least, and what might you be missing? 3. What aspect of how we live now will seem insane in 20 years? **Suggested Questions: Personal Philosophy** 1. What rule for life did you create after learning something the hard way? 2. When did you stop believing that everyone else had it figured out? 3. What paradox about life have you learned to live with?

[Profs and Pints Metro Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Celtic Mythology,”** an exploration of the beliefs of a people whose influence spread far beyond the British Isles, with Larissa “Kat” Tracy, past president of the American Society of Irish Medieval Studies, former editor of its journal, *Eolas*, and visiting assistant teaching professor of English at the University of Maryland Baltimore County. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-celtic-myths](https://events.ticketleap.com/tickets/profsandpints/nv-celtic-myths) . The Celts inhabited lands stretching from the British Isles to parts of France and the Holy Roman Empire. Their influence can be seen in the art of the Vikings, in the rich oral and literary traditions of the Irish, Welsh and Bretons, and in the modern renaissance of Celtic culture. But who exactly were they? Get into the minds of the Celtic people by learning about their myths and beliefs with Larissa “Kat” Tracy, a scholar of Old and Middle Irish and Middle Welsh language and literature and published translator of Old Irish texts whose dynamic and fascinating talks have earned a considerable following among Profs and Pints fans. Dr. Tracy will delve into early medieval literary records that tell stories of the Tuatha de Danann, a godlike people who invaded Ireland and then were defeated themselves. She’ll offer a new perspective on faeries, banshees, and leprechauns by describing how the ancient Otherworldy people once believed to inhabit the western realms of Ireland were diminished or demonized into figures of popular folklore. You’ll learn how the ancient God of the Sun become one of the “little people” guarding cauldrons of gold and bestowing luck, how immortal beings of majestic stature shrank to small, winged creatures in the back of gardens, and how supernatural women associated with the “people of the mound” became screaming harbingers of death. We’ll explore how medieval literary texts inspired later legends and became adapted into folklore. You’ll gain an understanding of how the medieval Catholic Church’s growing power led local people to reimagine their ancient gods and goddesses as Christian figures like Saint Bridget and Saint Patrick. You’ll gain an appreciation of how the Celts gave rise to living traditions that survive in modern popular culture through the preservation of languages, storytelling and music enjoyed all over the world, and renewed interest in goddesses like Brid and celebrations like Samhain. (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: From “Riders of the Sidhe,” a 1911 John Duncan painting of the Tuatha Dé Danann.

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

**[Bitcoin District](https://bitcoindistrict.org/)** is a community of Bitcoiners living & working in the greater DMV metro area. Join us for a "Coffee & Bitcoin" meetup where we'll talk about what's happening in the world of Bitcoin. We highly encourage anyone who is new to Bitcoin or just a little curious to come and ask questions... don't be shy! 🚗 PARKING: Paid parking in the garage, make sure to ask at the counter for validation. Limited free street parking is also available. 🚆 METRO: Get off at the McLean station (Silver line) + 3 minute walk **Our events are Bitcoin focused and we generally avoid discussing other coins & tokens. Nothing discussed during this meetup is financial advice. Always do your own research.**

Sleep in on Sundays. When you've had your fill of pajama-time, roll out and have some tasty brunch with your fellow Humanists!

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

The Humanist Monthly Program is our longest running event and still a community favorite. In the old days it used to be called "Going to HCCO" and we still like to think of it as our flagship event. Food and drinks will be provided at the event. Feel free to show up a little bit early to hang out and talk. Our March speakers are Molly Gaines and Zack Parrish, co-organizers of the Secular Education Association: They will share their story of how a small group of Ohio parents grew into a national organization tracking released-time religious instruction and other church–state issues in public schools. The presentation will cover SEA’s early wins and hard lessons, what we’re seeing nationally right now, and how local advocates can play a meaningful role in protecting public education. Attendees will leave with a clearer understanding of the landscape — and practical ways to get involved. Going forward our meetings will be hybrid. You can meet us in-person or attend online Join Zoom Meeting [https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1](https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1) Meeting ID: 878 3656 4953 Passcode: 760812 One tap mobile +19292056099,,87836564953#,,,,\*760812# US (New York) +13017158592,,87836564953#,,,,\*760812# US (Washington DC) The formal presentation will start at noon

So this month's prompt is more general. I think we can all agree that we are living in "unique" times that require coping skills. I think that one role and/or purpose of philosophy is to help us deal with our daily lives and our "unique" times. So, let's share our feelings and thoughts about which philosopher/philosophy we turn to in order to deal with our crazy events. Who/what helps you stay focused in your daily life and helps you sleep at night. I find that Stoicism with a little philosophical pessimism mixed in goes a long way in helping me deal with what I see as very destructive, fearful and mean spirited public policies at both the state and federal levels. Hope to see you on March 28th!

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability. This session will be at the Worthington Park Library in the Olentangy Meeting Room.

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!