AI Summary
5 min readSkyler Chan of GRU Space is building a factory that turns lunar soil into bricks. He's not selling a moonshot fantasy—he's selling a specific, engineered path to the first hotel on the moon, and he's already been through Y Combinator to prove it. The episode dives into how he thinks about resource utilization, customer acquisition, and the very long game of space infrastructure, all while sidestepping the trap of needing to ship everything from Earth.
The Core Problem: The Tyranny of the Supply Chain
Chan’s fundamental insight is that the cost of sending materials from Earth to the moon is prohibitive. As he puts it, “it doesn't make sense for us to just keep shipping shit to the moon.” The analogy he uses is building the United States: you don’t import everything from Europe; you use what’s available locally. For the moon, that local resource is lunar regolith—essentially, the dirt on the surface. The goal is to decouple from Earth’s supply chain, which is the only way to make a permanent lunar presence economically viable.
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What you'll learn
- 1 (11:39) **Guest intro and origin story** - Skyler Chan explains how childhood astronaut dreams led to founding Gru Space
- 2 (12:27) **Core technical approach** - Using lunar regolith to make bricks instead of shipping materials from Earth
- 3 (14:42) **Business model and NASA pathway** - Targeting NASA moon base construction contracts via TRL demonstration
- 4 (16:15) **Long-term vision and regulation** - Moon base construction as wedge into owning lunar resources and land
- 5 (17:43) **Robotics-first construction** - Entire hotel structure can be built end-to-end with robots before humans arrive
- 6 (20:55) **Lunar economy ecosystem** - Multiple service providers needed for power, comms, and rovers
- 7 (23:59) **Moon hotel concept** - Inflatable habitat shielded by regolith bricks to solve pressure, temperature, radiation, and micrometeorite issues
+ Full timestamped outline available in the app
Show Notes
This Week In Startups is made possible by:
Vanta - vanta.com/twist
Today’s show:
The next SpaceX won't be building rockets; it'll build the first hotel on the Moon. Today on TWiST, GRU Space founder Skyler Chan brings a brick made from lunar soil into the studio and lays out a plan to manufacture on the Moon as early as next year. We get into the science, the business model, and the regulatory land-grab ahead!
Then, the US government forces Anthropic to pull Fable 5 and Mythos 5. Jason and Lon unpack what it means when a single AI model can vanish overnight, and the US government's emergency order.
Stick around for the winner (or winners?!) of the $5,000 AI podcast-companion bounty!
Timestamps:
0:00 Knicks playoff run, San Antonio & Texas BBQ (Black's vs. Terry Black's)
8:23 Plaud: If your work depends on conversations — interviews, meetings, calls — you need a Plaud NotePin. You can check it out at https://Plaud.ai/twist and use code TWIST for 10% off!
9:52 Guest intro: Skyler Chan, GRU Space — and the lunar-soil brick
10:29 Every.io - For all of your incorporation, banking, payroll, benefits, accounting, taxes or other back-office administration needs, visit https://every.io
12:14 Why the next SpaceX builds habitats, not rockets
15:18 NASA's $20B moon-base signal & the TRL contracting path
16:13 Business model: from construction contractor to owning lunar land
18:06 Building the hotel robotically + $1M refundable deposits
20:00 Sentry - Your team should be focused on shipping features — not chasing down bugs. New users can get $240 in free credits when they go to https://sentry.io/twist and use the code TWIST
31:09 Vanta - Get $1000 off your SOC 2 at https://www.vanta.com/twist
39:28 News: US government blocks Anthropic's Fable 5 & Mythos 5
41:34 The politics: Hegseth, Sacks, Jassy & the "conspiracy" angle
1:09:39 Why no single model dependency is safe (multi-model harnesses)
1:18:47 Bounty results: MySidecast wins $3,000
1:19:07 Honorable mentions: Couchverse (Lemon Slice) & Convalenz
1:29:44 Next bounty: the Annotated app
🔗 Links & Resources Mentioned:
Guest & company
Skyler Chan: Founder, GRU Space → https://www.ycombinator.com/companies/galactic-resource-utilization-space-inc-gru-space
GRU Space (Galactic Resource Utilization): YC startup building lunar-regolith bricks and a robotic Moon hotel → More from this podcast