Astrophysics

**Greetings, GeoDC Friends!** **We're back this month for a Meetup on Wednesday, March 11th at Sudhouse DC.** **This month, we'll have our usual networking chats, job and event announcements and lightning talks from our community members.** **\>\>Please complete this form if you would like to present next week or any other upcoming MeetUp event\. :** [https://docs.google.com/forms/d/10Yj1-BOBXHqtoepJNW2X1WRzmdMjvbBPB8F5fgu5Lhk](https://docs.google.com/forms/d/10Yj1-BOBXHqtoepJNW2X1WRzmdMjvbBPB8F5fgu5Lhk) **Speaker Lineup** **David Bleecker: Open Source Mapping of Gravity Anomalies: What They Are and What We Can Learn** * *This talk will be an introduction to bouguer anomalies (aka gravity anomalies) in the field of geophysics, and the application of bouguer anomaly maps to modern GIS tools. The first section will be an overview of what a bouguer anomaly is, how to interpret maps of bouguer anomalies, and how the modern space-based bouguer anomaly mapping satellites work. The second section will focus on the results obtained by analysis of the bouguer anomaly map data taken from the best available public dataset (GGMPlus), with an emphasis on specific locations that are especially prominent anomalies, what geology and geophysics tells us about what the causes of these localized anomalies may be, and (time permitting), a brief foray into some of the unanswered scientific questions that remain regarding the cause of certain localized anomalies.* **Ben Ballerstein: Crash Cartography: Mapping a Year of DC Bicycle Collisions** *\>The presentation is a walkthrough of the design and build of an animated web map visualizing bicycle collisions in Washington\, D\.C\. in 2025\. This independent project used open\-source software and data from Washington D\.C\.'s open data platform\. The presentation walks through the analysis process from concept\, data acquisition and cleaning\, geospatial processing in QGIS\, and presentation in MapLibre with custom data visualizations\.* *\***We're getting a jumpstart to Spring Cleaning this year as well.\**** **On March 11, we will have GeoDC's first-ever Geo-Swag Swap.** * **If you've been to any conferences or trainings lately, you may have found yourself wondering 'how in the WORLD did I accumulate so much stuff?'** * **Bring your unused or lightly used Geo Themed SWAG to Sudhouse DC on the 11th.** * **The Swag Swap table will be by the staircase, right as you enter into the event space on the 3rd floor.** * **Please take what you need/want from the table; all unwanted items will be donated or recycled** ***-You do not need to bring Swag to particpate.*** ***\- Examples of Swag: notebooks\, mousepads\, pint glasses\, tote bags\, pens\, pins\, stress balls\, decals\, lens cleaners\, rulers\, magnets\, laser pointers\, lip balm\, etc\.*** **Looking forward to seeing everyone next week!**

World Learning Toastmasters Club meetings are held every 2nd and 4th Wednesday from 12:00 to 1:00 p.m. We are a fun loving group of professionals looking to develop our public speaking and leadership skills. Take a break from your work and come join us for a fun afternoon. All guests are welcome! Closest Metro station: Either McPherson Square (white house exit) or Farragut North. For more information about the club, please visit http://worldlearningtoastmasters.toastmastersclubs.org/

At this event you'll discover how to better understand and control your subconscious mind, helping you overcome doubts and fears. If you have anger issues, depressions and anxieties. this event will show you how to overcome them.

Agricultural Research Center Toastmasters is conducting a 5-session Public Speaking Workshop. The sessions will be held in person on Wednesdays March 4-April 1, 2026 at 5:00-7:00 pm. This workshop will (1) help you overcome nervousness, (2) boost your self-confidence, (3) make you a more organized speaker, and (4) teach you 'secrets' of public speaking. Email contact-3039@toastmastersclubs.org for more information. \-\-\-\-\-\-\-\-\-\- ARE YOU READY FOR A LIFE-CHANGING, CAREER-ENHANCING EXPERIENCE? The Agricultural Research Center Toastmasters in Beltsville, Maryland meets on the first and third Wednesday of each month to practice our communication and leadership skills. We follow the educational program of Toastmasters International. We have great success individually and as a group. Our members are from different cultures and backgrounds. Several of us are scientists for the US Department of Agriculture. Others work at the Patuxent Wildlife Research Center. Our members also are tax preparers, translators, and teachers. Each year in the spring we hold a beginners class. The next class will be in March 2026. Visit our webpage at http://arc.toastmastersclubs.org/ .

This is a regularly held in-person integration circle and a supportive container that centered on psychedelic experiences. We co-create a space of inclusivity, compassion, and care for all. We gather to help each other integrate our journeys, find "the others", and or seek wisdom about altered states of consciousness. Arrive ready to share honestly, openly, and from the heart. Bring your insights from journeys to unpack or your questions about plant medicines and psychedelic experiences to ask the more experienced journeyers. At 7 pm we will do a short grounding exercise and a brief check-in/ice breaker. At 7:15 pm we will begin the integration circle with honest and open processing of psychedelic experiences. Your facilitators are trained in psychedelic integration and or other coaching/facilitation modalities but we are not mental health professionals, we are community members called to service in mutuality. The event is by donation as we do need to pay for the space and supplies used. The suggested donation is $10-$20/person (cash, Paypal or Venmo). Surplus above and beyond covering costs will go towards future community event facilitation and or materials.

Toast of Oakton is currently meeting in-person at Oakton Library. We also have a virtual link to the meeting which is available when you click "Attend" in the Toast of Oakton Meeting Online Information event. We welcome you to join us on the 2nd and 4th Wednesdays of the month. For questions, further information or to contact us visit our website - https://too.toastmastersclubs.org/ Meet and greet - 6:45pm Meeting begins - 7:00pm

Hello everyone! Who doesn't love Pizza! We'll be meeting at Andy's Pizza in Tyson's Galleria and doing some old-fashioned networking, beer-drinking, and pizza-eating. I guarantee a fun time, or else your pizza is free :) **Location:** Andy's Pizza, Tyson's Galleria, 2001 International Dr, McLean, VA 22102 **Overview:** Join us at AI Innovators Network for our upcoming meetup in Tysons dedicated to exploring the latest trends in Artificial Intelligence. Whether you're an AI enthusiast, a professional, or someone curious about the intersection of technology and AI, this event is perfect for networking, learning, and sharing insights. Connect with like-minded individuals from DC, Northern Virginia, and Maryland as we dive deep into the opportunities and challenges of integrating AI. Don't miss this opportunity to be part of the conversation driving innovation and progress in Artificial Intelligence.

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.

Every Sunday afternoon before church, one of the Covenant Life Church prophetess' hosts a prophetic training class that activates participants in the Gifts of the Holy Spirit. During this class, participants will be provided opportunity to be taught how to use the Gifts of the Holy Spirit and will have opportunity to ask questions and talk with someone who has been used in the Gifts during ministry. Teaching is provided on the gifts with emphasis on the Gift of the Prophecy. A combination of lecture and experiential learning is employed to teach, guide and instruct the participants. Everyone is welcome, all classes are free. Childcare is not provided.

**[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

It’s time to take control of your mental health. How do you get rid of stress, anxiety and uncertainty? These emotions are buried deep in your reactive mind. Find out what the reactive mind is, and in the process find yourself. Here is the secret of being positive and free: Thinking positively is not enough. You also have to get rid of the negative thinking. Your mind is like a garden. You can plant many beautiful flowers in it, but if you don't get rid of the weeds when you plant your flowers, the weeds will soon take over the whole garden. A positive thought is like a flower in your mental garden, and a negative thought is like a weed. You cannot expect to have a positive mindset if you continue to have negative thoughts dwelling and growing there. So, how do you get rid of the negative thoughts? That's what this Meetup is all about. Attend this local meeting and find out! The Meetup event will be led by a consultant who had helped many people live happier in life. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is created by the Dianetics & Scientology life improvement center.

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!