If you have been thinking about attending ISDC 2026 but have not yet registered, you are probably wondering what the experience is actually like. Not the session list or the hotel details, but the feel of it. Who shows up? What happens between sessions? Is this the kind of event where you sit in an audience and listen, or do you actually connect with people?

The short answer: ISDC is unlike most conferences. It is smaller than a major industry expo, more interdisciplinary than an academic symposium, and more welcoming than either. The people who attend tend to come back, and many say the conversations that happen in hallways and over dinner are as valuable as the sessions themselves.

Here is what to expect if you join us June 4 to 7 at the Hilton McLean Tysons Corner in McLean, Virginia.

What a Typical Day at ISDC Looks Like

ISDC runs four days, Thursday through Sunday. Each day follows a similar rhythm.

Mornings typically begin with plenary sessions and keynote speakers. These are the big-picture talks from astronauts, NASA leaders, commercial space executives, and researchers working at the forefront of space development. Past ISDC keynotes have included figures like Jared Isaacman, Dr. Martine Rothblatt, and Dr. Sian Proctor.

Afternoons shift into parallel track sessions, where attendees choose from multiple topics running simultaneously. This is where the depth lives. You might move from a session on lunar resource utilization to a panel on space law to a student presentation on habitat design, all in one afternoon. The variety is one of the things that sets ISDC apart from conferences that focus on a single discipline.

Evenings bring receptions, dinners, and networking events. These are not afterthoughts. Many attendees describe the evening events as the highlight of their ISDC experience, because they create space for the kind of informal, one-on-one conversations that structured sessions cannot replicate.

Who Attends the International Space Development Conference

One of the most common concerns from first-time attendees is whether they will “fit in.” The answer is almost certainly yes.

ISDC draws between 800 and 1,000 people each year, with 300 to 400 coming from outside the United States. The mix includes NASA professionals, aerospace engineers, university researchers, students at every level, space policy analysts, educators, entrepreneurs, nonprofit advocates, journalists, and space enthusiasts with no formal industry affiliation.

This is not a room full of PhDs talking past everyone else. ISDC is designed to be accessible. As one past attendee put it in a review on the ISDC website: “It is amazing to see how a huge variety of talented people of all ages and from all around the world reunite in one place to teach others as well as learning from them.”

If you are passionate about space development in any capacity, you belong here.

What First-Timers Are Often Surprised By

People who attend ISDC for the first time consistently mention a few things that surprised them.

The speakers are accessible. At large industry conferences, keynote speakers disappear after their talks. At ISDC, they often stay for sessions, join dinner tables, and engage in hallway conversations. Past attendees have described having extended one-on-one conversations with astronauts, NASA officials, and company founders during evening events.

The cross-disciplinary range is real. You will hear from a planetary scientist, a space lawyer, a habitat designer, and a student presenting their settlement concept all in the same day. This is by design. ISDC’s programming reflects the National Space Society’s belief that space development requires collaboration across every field.

Students are a central part of the event. The NSS Gerard K. O’Neill Space Settlement Contest brings student teams from around the world to present their work at ISDC. The Rising Stars track gives early-career professionals a dedicated platform. If you are a student or early in your career, ISDC is built to include you, not just accommodate you.

The community feeling is strong. ISDC is not a trade show. There is a shared sense of purpose that runs through the event. People are here because they believe in humanity’s future in space, and that shared conviction creates a different kind of energy than you find at purely commercial or academic gatherings.

The 2026 Theme: Space for Us All

ISDC 2026 carries the theme “Space for Us All,” reflecting a focus on broadening participation in space development across nations, backgrounds, and disciplines. This theme shapes not just the session topics but the overall atmosphere of the event.

Whether you are an experienced aerospace professional or someone exploring the space community for the first time, the conference is structured to make you feel welcome and to give you real value for your time.

Why McLean, Virginia Matters

Hosting ISDC 2026 near Washington, D.C. is a deliberate choice. The conference location places attendees within miles of NASA headquarters, the Smithsonian National Air and Space Museum, major aerospace contractors, congressional offices, and policy think tanks that shape space legislation.

For attendees interested in space policy, advocacy, or government partnerships, this proximity adds a layer of relevance that most conference locations cannot offer. And for those extending their stay, the D.C. metro area offers world-class museums, dining, and cultural attractions.

Is ISDC Worth It?

This is the real question behind most ticket hesitation, and the honest answer is that it depends on what you are looking for. If you want a place to learn from people doing real work in space development, to make connections that last beyond the event, and to be part of a community that has been advancing space advocacy for over four decades, ISDC delivers on all of those things.

The conference regularly draws attendees who return year after year. The reason is straightforward: the combination of quality programming, accessible speakers, and a genuinely welcoming community is hard to find anywhere else in the space sector.

👉 Register for ISDC 2026 in McLean, Virginia 👉 Explore the ISDC 2026 schedule and sessions

Frequently Asked Questions

Do I need a background in aerospace to attend ISDC?

No. ISDC welcomes attendees from all backgrounds. The conference is designed to be accessible to professionals, students, educators, advocates, and anyone with an interest in space development. Many attendees have no formal aerospace credentials.

Is ISDC good for students?

Yes. ISDC offers discounted student registration, a dedicated Rising Stars track for early-career professionals, the NSS Space Settlement Contest, and mentorship and networking opportunities throughout the event.

What is the conference atmosphere like?

ISDC is smaller and more personal than large industry expos. Attendees regularly describe it as welcoming and community-driven, with strong opportunities for informal conversation with speakers and fellow attendees.

Can I attend just one day of ISDC?

ISDC offers both full conference passes and single-day options. Details are available on the registration page.

How do I get to the venue?

The Hilton McLean Tysons Corner is accessible via Dulles International Airport and Reagan National Airport, both within 13 miles. The Silver Line Metro and major roadways including I-495 provide additional access. More details are available on the ISDC travel page.