Astrophysics

Join DC Metro Crafts for our mid-month meetup. Bring your own cross stitch, knitting, crochet, or other portable craft. The Southwest Library is half a block from the Waterfront Metro. We're upstairs in Conference Room 2 at 5:30pm. Take the elevator to the second floor and the room is on your left. If you take the stairs, take two rights and the room is on your left.

​Bitcoin mining today looks very different from what it was a decade ago. What began largely as a hardware race has evolved into a complex global industry shaped by energy markets, infrastructure development, and new demands on data centers. Companies that adapt to this new reality don’t just survive. They position themselves to lead the next phase of the industry. 👉 [RSVP on Luma](https://luma.com/cmlndtin) In this panel, executives from publicly traded mining companies will discuss how their strategies reflect this new frontier. From hardware innovation and home mining to heat reuse, large-scale energy infrastructure, and the growing intersection with AI and high-performance computing. The conversation will explore how the industry has changed, where it is headed, and why these companies remain committed to building in Bitcoin. **Guest Speakers** * ​James Cheng (CFO, Canaan Inc.): A seasoned finance leader with over 20 years of experience at Fortune 500 companies, James oversees the financial strategy for a major NASDAQ-listed hardware pioneer, focusing on investor relations and debt/equity financing. * ​Darcy Daubaras (CFO, HIVE Digital Technologies): A strategic financial expert and Corporate Director, Darcy leads global growth for HIVE, specializing in public company regulatory reporting and the intersection of crypto mining with high-performance computing. * ​Elizabeth Frei Duchek (Government Relations, Bitdeer): With over 15 years of experience in government affairs and policy analysis, Elizabeth leads government relations for Bitdeer (NASDAQ: BTDR). Her background in appropriations and public policy brings a critical perspective to how regulation, infrastructure, and energy policy intersect with the future of Bitcoin mining. 👉 [RSVP on Luma](https://luma.com/cmlndtin)​ **About the Bitcoin District Initiative** This event was organized by The Bitcoin District Initiative, a 501(c)(3) nonprofit working to build a grassroots Bitcoin circular economy in Washington, DC through education, business onboarding, and community outreach programs. If you’d like to get involved or support the Initiative, visit [bitcoindistrictinitiative.org](https://bitcoindistrictinitiative.org/).

This popular and accomplished Toastmasters club (#4787) is open to everyone, with an average of 25 people per meeting, mainly business professionals from the Reston/Herndon area. Meetings are held on the 1st, 3rd and 5th Tuesdays of the month from 6pm to 7pm at 2310 Colts Neck Rd, Reston, VA 20191. Some of the group's members are accomplished professional speakers, while others are just starting down their path of improved public speaking, including many non-native English speakers. Whether you're just starting out and looking to improve your speaking or overcome some nervousness...or looking to gain connections and sharpen your skills, you'll feel connected with the members of Reston Town Center Toastmasters. Stop by. Check us out! Chances are you'll like us so much that you'll be back! For more information: http://towncentertoastmasters.toastmastersclubs.org/

Brisk 3- to 4-mile urban hike starting and ending at Red Bear Brewing Company across from NoMa metro. We will hike the Metropolitan Trail to the Basilica, then return to Red Bear for drinks and food.

 Join Us for a Toastmasters Open House!   Date: March 17, 2026  Time: 5:30 PM – 8:00 PM  Location: Town Center Toastmasters What to Expect: 5:30–6:00 PM: Networking  6:00–7:20 PM: Meeting & Speeches  7:30–8:00 PM: Networking & Q&A  Food, drinks & fun included! Guests welcome!  Questions? Email: officers-4787@toastmastersclubs.org Come speak, learn, and connect with fellow Toastmasters! 

**Sales for this talk have been reopened as it has been moved to a larger space in Penn Social to accommodate demand.** [Profs and Pints DC](https://www.profsandpints.com/washingtondc) presents: **“Ireland’s Fight for Freedom,”** with Kevin Matthews, assistant professor of history at George Mason University and former London correspondent for Vatican Radio reporting on British and Irish news. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/dc-ireland-freedom](https://events.ticketleap.com/tickets/profsandpints/dc-ireland-freedom) .] After centuries of struggle, Irish men and women won their freedom from Great Britain after waging a war that set the pattern for all other independence struggles of the 20th century. But there was a price—the partition of their country, a split setting the stage for the Northern Ireland “Troubles” that didn’t end until 1998. Gain a deeper understanding of Ireland and its history with Professor Kevin Matthews, a historian who served as a journalist covering the last stages of the Troubles in Ireland in the early and mid 1990s. He’ll discuss in depth how the Irish won independence in a two-year war between 1919 and 1921, covering topics as the role women played in the conflict, the life and tactics of the revolutionary leader Michael Collins, and the Irish development of “urban guerilla warfare” using small, highly mobile armed units called “flying columns.” Most important, this talk will examine how the conflict between Irish nationalists and Irish unionists led to Ireland’s division and later conflict. From the Easter Rising to the Good Friday Agreement, from Bloody Sunday to Brexit, this conflict has never quite gone away. As the Irish poet, William Butler Yeats once wrote: Now and in time to be, Wherever green is worn, Are changed, changed utterly: A terrible beauty is born. Professor Matthews will explore how the Irish fought to a standstill what was then the mightiest empire in the world and how, more than he could have known, Yeats’ prediction still rings true today. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image: Members of the Irish Republican Army’s West Connemara Flying Column in 1921. (Public Domain photo.)

Business Oriented Toastmasters (BOTM) is an exceptionally strong Toastmasters club in Rockville, MD. Our club has earned President's Distinguished Club status for the last thirteen years in a row. We are dedicated to helping each of our members achieve their personal public speaking and leadership goals in a friendly, supportive environment. We pride ourselves on having organized, professional meetings with strong evaluations, while having fun at the same time. Guests are always welcome and no notice is necessary. Just show up and plan to have fun. See how BOTM can help you achieve your goals. We are a diverse club with both seasoned and new Toastmasters, and all ethnic and professional backgrounds. For more information, please visit our website at botm.toastmastersclubs.org or contact us at contact-2279@toastmastersclubs.org Meeting locations: 1st Wednesday of every month in person at Faith United Methodist Church, 6810 Montrose Road, Rockville, MD 3rd Wednesday of every month via Zoom

Shilohites Toastmasters meets every 2nd and 4th Sundays. Meetings start at 4:00 pm, and last one hour. We are a community club open to all. Parking is free. We focus on personal goals for professional development.

Title: A Dual Universe Model of Reality Date: March 21 2026 Noon - 14:00 EST Summary: While Terry was not the first to create the dual-universe model — that honor goes to Jennifer Chen and Sean Carroll in 2004, with a sad special mention of William Sidis in 1925 — Terry did come up with his own version in 2007 while watching a boringly one-sided high-school football game. In this talk, Terry will describe both how he later elaborated the idea into a faster-moving and more physics-compatible version of Roger Penrose’s 2010 Conformal Cyclic Cosmology (CCC) theory. In this talk, Terry will review the history of dual universes and explain how his version leads to a novel perspective on the nature of time, mass, uncertainty, and the Standard Model. Speaker: Terry Bollinger is a computer scientist with BS, MS and professional degrees from the Missouri University of Science and Technology.

We are the Federal Center Toastmasters Club. We meet the 1st, 3rd, and 5th Thursday of each month in Hyattsville, MD, from 12 noon to 1pm. Our meetings are held at the headquarters of the CDC’s National Center for Health Statistics of the CDC. Our meetings are open to the public, though visitors must go through building security procedures. For visitors who are not U.S. citizens, we do need to pre-coordinate a first visit with our security team. Contact us at: 1260@toastmastersclubs.org. We have been a Toastmasters Club for 40 years and always welcome new members! Join us, and you will improve your public-speaking and leadership skills in a friendly, supportive atmosphere!

Join PSW Science® on March 20 at 8 PM as we welcome Bill Diamond, President & CEO at The SETI Institute. During the question and answer period, in-person attendees and live stream viewers may ask the speaker questions, and in-person attendees may also engage with the speaker during the post-lecture reception. Refreshments are served. For more information on this meeting, please visit: https://pswscience.org/meeting/2533/ The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available. PSW Science, founded in 1871, is one of the oldest scientific societies in Washington D.C. Now, over 150 years later, we celebrate the Society's rich history and contributions to scientific discovery and cross-disciplinary collaboration. For information on how to become a member of PSW Science and membership benefits, please visit https://pswscience.org/join/

**Join us in Falls Church for conversations that go beyond small talk.** Higher Grounds – Falls Church is where this growing network of gatherings began: a 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 Falls Church 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?

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!

Let’s try some Filipino food at a well known Grandview area restaurant, This is the menu: https://www.canva.com/design/DAHByDNxwDA/TO8oxEmjQrBp_PP_mLPUag/view?utm_content=DAHByDNxwDA&utm_campaign=designshare&utm_medium=link2&utm_source=uniquelinks&utlId=h435abfbbb3#1

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

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.

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!

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.

Join us as we get together to see Ryan Gosling and Sandra Huller in the highly anticipated sci-fi adventure, PROJECT HAIL MARY! The film is based on the best-selling novel of The Martian and follows a man who awakens on a spacecraft before realizing his mission to save Earth. Here’s a description, trailer and plan for this event: DESCRIPTION: A science teacher wakes up on a spaceship, light years from home with no recollection of who he is or how he got there. As his memory returns, he begins to uncover his mission to save the Earth. The film is directed by the filmmaking due Phil Lord and Christopher Miller (21 and 22 Jump Street, Into and Across the Spider-Verse) and is based on the 2021 novel by Andy Weir (The Martian). The film stars Ryan Gosling, Sandra Huller (Anatomy of a Fall, The Zone of Interest), Lionel Boyce, Milana Vayntrub and Ken Leung. TRAILER: https://www.youtube.com/watch?v=5VYsnngkS_U BUZZ AND REVIEWS: The buzz and reviews for PROJECT HAIL MARY are off-the-charts good! The film is earning a 95% Certified Fresh rating on Rotten Tomatoes, where critics call it an “old school blockbuster crowd-pleaser” and “a new sci-fi classic!” It’s “deeply hopeful,” well-acted,” funny,” “dramatic,” and “exceptionally rousing throughout!” Others call it “something truly magical” and one that “we’ll be talking about this one for decades to come!” And I believe Slashfilm says it best: “It will lift up and squeeze your heart, crack you up with laughter, and give you a sense of hope and wonder in a way that few movies have been able to inspire.” MOVIE PLAN: Please purchase your ticket for the 2:30pm SuperScreen DLX showing and meet in the lobby area between 2:05 and 2:15pm! Tickets already on sale and will likely move fast for this hot ticket / opening weekend showing so advance ticket purchase as soon as possible is advised! Once you have yours, please list your seat number in the Comments section of this event. As a head’s up, this is a longer movie at 2hrs 36mins. DINNER PLAN: Dinner immediately following the movie at 5:30pm at group favorite, FUGU SUSHI, located just next door! Separate RSVP required for the Dinner / Movie portions of this event. An RSVP here means you're signed up for the MOVIE! This portion will be open as long as seats remain. If you also plan to join for dinner, please also RSVP in the separate event listing for the dinner portion of this event. Should be a good one, Dan