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Christian Keil

@pronounced_kyle • 47,909 subscribers

investor @a16z ◦ fmr. satellite builder @astranis ◦ dad

Shorts

Air travel is a modern marvel we completely take for granted ‣ 45,000 daily flights in the US ‣ with only ~1% cancelled and ~0 accidents ‣ taking you about anywhere on the planet in <1 day

Air travel is a modern marvel we completely take for granted ‣ 45,000 daily flights in the US ‣ with only ~1% cancelled and ~0 accidents ‣ taking you about anywhere on the planet in <1 day

1,135,955 просмотров

There's nothing better than having a kid who wants to be an astronaut. (And telling him "daddy built a space ship")

There's nothing better than having a kid who wants to be an astronaut. (And telling him "daddy built a space ship")

73,491 просмотров

I cannot believe this video is real. Seems like CGI but then the shrapnel hits the water...

I cannot believe this video is real. Seems like CGI but then the shrapnel hits the water...

1,165,807 просмотров

The meteorite that made this crater was just 150 feet in diameter. The crater is one mile wide.

The meteorite that made this crater was just 150 feet in diameter. The crater is one mile wide.

30,599 просмотров

Just heard transmissions from the International Space Station! (With a $35 radio, standing in my backyard.)

Just heard transmissions from the International Space Station! (With a $35 radio, standing in my backyard.)

43,644 просмотров

Thin, two-sided parts can be tough to machine — flexing/vibration, fixturing, avoiding bowing... Here's how we at Astranis Space Technologies approached machining this part that will soon head to space:

Thin, two-sided parts can be tough to machine — flexing/vibration, fixturing, avoiding bowing... Here's how we at Astranis Space Technologies approached machining this part that will soon head to space:

113,214 просмотров

A truly incredible feat of engineering — and still no air-to-air kills

A truly incredible feat of engineering — and still no air-to-air kills

76,098 просмотров

some professional news

some professional news

95,909 просмотров

timeline cleanser: cutting metal edition

timeline cleanser: cutting metal edition

44,605 просмотров

Odds my son goes to outer space someday, 25%. Odds he does a full orbit around Earth, 10%. Odds he sets foot on Mars/Moon, <1%. Realistic?

Odds my son goes to outer space someday, 25%. Odds he does a full orbit around Earth, 10%. Odds he sets foot on Mars/Moon, <1%. Realistic?

26,186 просмотров

We're building satellites in San Francisco.

We're building satellites in San Francisco.

16,372 просмотров

Videos

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Overnight, China successfully launched a new medium-class rocket to orbit — Long March 12B. Looks like they gave no airspace notice (!), and carried suspiciously Starlink-shaped satellites to orbit... all on their first try. China's space industry is catching up to ours, fast.

Overnight, China successfully launched a new medium-class rocket to orbit — Long March 12B. Looks like they gave no airspace notice (!), and carried suspiciously Starlink-shaped satellites to orbit... all on their first try. China's space industry is catching up to ours, fast.

399,731 просмотров • 1 месяц назад

I want to fund a space warfighting prime. Space is a unique domain. It's huge, hostile, and fragile — so we need tech that can help America secure outer space *while preserving the domain itself.* If you're thinking about the future of space and defense, please get in touch.

I want to fund a space warfighting prime. Space is a unique domain. It's huge, hostile, and fragile — so we need tech that can help America secure outer space while preserving the domain itself. If you're thinking about the future of space and defense, please get in touch.

319,914 просмотров • 2 месяцев назад

okay, yeah, maybe OSHA was a good idea after all

okay, yeah, maybe OSHA was a good idea after all

1,106,606 просмотров • 8 месяцев назад

I feel like on the first day aliens arrive on Earth, they're gonna be like "Wait, you guys are still physically winding up motors, electromagnets, and transformers?"

I feel like on the first day aliens arrive on Earth, they're gonna be like "Wait, you guys are still physically winding up motors, electromagnets, and transformers?"

760,809 просмотров • 1 год назад

The first internet satellite ever dedicated to the Philippines launches TOMORROW.

The first internet satellite ever dedicated to the Philippines launches TOMORROW.

690,510 просмотров • 1 год назад

Honda just released the footage of this rocket test — successful launch and landing! The video also has renders of: ‣ an orbital vehicle ‣ a "regenerative fuel cell system" at a moon base ‣ a robot doing maintenance on the lunar surface

Honda just released the footage of this rocket test — successful launch and landing! The video also has renders of: ‣ an orbital vehicle ‣ a "regenerative fuel cell system" at a moon base ‣ a robot doing maintenance on the lunar surface

230,289 просмотров • 8 месяцев назад

.Danielle Fong 🔆 is building a light-powered engine. It converts fuel → heat → light → electricity, giving it the energy density of a hydrocarbon-powered engine and the mobility of a battery. Basically, its a portable Dyson Sphere. Here's how it works:

.Danielle Fong 🔆 is building a light-powered engine. It converts fuel → heat → light → electricity, giving it the energy density of a hydrocarbon-powered engine and the mobility of a battery. Basically, its a portable Dyson Sphere. Here's how it works:

545,874 просмотров • 2 лет назад

Somos Internet is a Y Combinator startup that lays 2 km of fiber every day in Colombia. They already have 27,000 subscribers — because people want what they offer: 100 Gbps internet connections for just $80/m. How is that possible? Somos is building a new kind of network from the ground up — plugging into transatlantic fiber, building his own backbone, connecting into apartments, and building custom routers that can handle that much throughput. Forrest (Forrest Heath) visited me at my office, and we talked through the technical details. I think you'll love it. HD Version at the link in my bio. Timestamps: 00:00 — Introducing Somos Internet 02:40 — Nobody Understands how Telco Networks Work 03:51 — How to Learn About Telco Anyways 04:53 — How Forrest Won Over the Local Drug Lords 06:50 — The Idea Maze: from Wifi to Fiber 09:25 — What Somos Internet is Building: Enterprise-Grade Fiber to Your Home 12:05 — How Telcos Work Today (and Their Fundamental Flaw) 15:46 — "The Core Innovation of Somos Is..." 17:40 — HOW IT WORKS: A Nested-Ring Topology, Not a Tree 21:43 — An End-to-End Service 23:57 — (Including Routers) 25:00 — How is 100 Gbps per Customer Possible? 31:08 — How They're Cheaper: Switches, not Routers 35:00 — Why Sell a Consumer Service? 39:40 — Why Doesn't Bell Labs Still Exist? (It's the MBAs.) 42:28 — Customer Service is Easier When You Build Everything Yourself 43:37 — Telcos Have Given Up on Innovating 47:46 — How to Build a Team Smart Enough to Execute This Vision 51:41 — Is This a Hard Idea to Pitch a VC? 55:58 — Could Somos Have Started in America, not Colombia? 59:23 — How Did Forrest Learn All of This From Zero? 1:02:36 — What Technical Challenges Are Next For Somos?

Somos Internet is a Y Combinator startup that lays 2 km of fiber every day in Colombia. They already have 27,000 subscribers — because people want what they offer: 100 Gbps internet connections for just $80/m. How is that possible? Somos is building a new kind of network from the ground up — plugging into transatlantic fiber, building his own backbone, connecting into apartments, and building custom routers that can handle that much throughput. Forrest (Forrest Heath) visited me at my office, and we talked through the technical details. I think you'll love it. HD Version at the link in my bio. Timestamps: 00:00 — Introducing Somos Internet 02:40 — Nobody Understands how Telco Networks Work 03:51 — How to Learn About Telco Anyways 04:53 — How Forrest Won Over the Local Drug Lords 06:50 — The Idea Maze: from Wifi to Fiber 09:25 — What Somos Internet is Building: Enterprise-Grade Fiber to Your Home 12:05 — How Telcos Work Today (and Their Fundamental Flaw) 15:46 — "The Core Innovation of Somos Is..." 17:40 — HOW IT WORKS: A Nested-Ring Topology, Not a Tree 21:43 — An End-to-End Service 23:57 — (Including Routers) 25:00 — How is 100 Gbps per Customer Possible? 31:08 — How They're Cheaper: Switches, not Routers 35:00 — Why Sell a Consumer Service? 39:40 — Why Doesn't Bell Labs Still Exist? (It's the MBAs.) 42:28 — Customer Service is Easier When You Build Everything Yourself 43:37 — Telcos Have Given Up on Innovating 47:46 — How to Build a Team Smart Enough to Execute This Vision 51:41 — Is This a Hard Idea to Pitch a VC? 55:58 — Could Somos Have Started in America, not Colombia? 59:23 — How Did Forrest Learn All of This From Zero? 1:02:36 — What Technical Challenges Are Next For Somos?

270,646 просмотров • 1 год назад

America is tearing down massive nuclear cooling towers While China is setting up massive nuclear cooling towers But hey, at least we're making hype FPV drone videos of our downfall

America is tearing down massive nuclear cooling towers While China is setting up massive nuclear cooling towers But hey, at least we're making hype FPV drone videos of our downfall

117,995 просмотров • 10 месяцев назад

It's (always) a great day to cut titanium at Astranis Space Technologies.

It's (always) a great day to cut titanium at Astranis Space Technologies.

90,099 просмотров • 9 месяцев назад

One of my favorite visualizations of all time: This is 24 hours on orbit.

One of my favorite visualizations of all time: This is 24 hours on orbit.

147,490 просмотров • 1 год назад

This video is great doomer antidote. Another masterpiece from Jason Carman

This video is great doomer antidote. Another masterpiece from Jason Carman

43,310 просмотров • 4 месяцев назад

I pulled a control rod out of an active nuclear reactor. It was Matt Loszak's idea — he cofounded Aalo Atomics to build a nuclear reactor safe enough for your backyard, a bold idea... and one worthy of an experiment. Our hypothesis was that we would survive this experiment thanks to Uranium Zirconium Hydride (UZrH), the fuel used by both the test reactor at UT Austin and Aalo's future reactors. Matt said this fuel wouldn't melt down given its strong "negative temperature coefficient of reactivity." If you don't know what that means... neither did I. But it may be the key to unlocking abundant, safe, clean energy. That's why I flew down to the University of Texas to make this video, and ran an experiment on UZrH fuel using a real nuclear reactor. I think you're going to love it. HD version at the link in my bio, and thank you to Fifty Years Fund for helping make this episode happen. 00:00 — What if nuclear power didn't have to be dangerous? 01:09 — Introducing Aalo Atomics 02:20 — UT Austin TRIGA reactor tour & overview 04:26 — Nuclear energy 101 05:27 — The experiment: control rod ejection 06:57 — Experimental results: power, energy, temperature 08:22 — "Negative Temperature Coefficient of Reactivity" 09:41 — Why isn't everyone using this? 10:32 — Aalo's bet: adapting UZrH for power production 11:40 — The future of nuclear power

I pulled a control rod out of an active nuclear reactor. It was Matt Loszak's idea — he cofounded Aalo Atomics to build a nuclear reactor safe enough for your backyard, a bold idea... and one worthy of an experiment. Our hypothesis was that we would survive this experiment thanks to Uranium Zirconium Hydride (UZrH), the fuel used by both the test reactor at UT Austin and Aalo's future reactors. Matt said this fuel wouldn't melt down given its strong "negative temperature coefficient of reactivity." If you don't know what that means... neither did I. But it may be the key to unlocking abundant, safe, clean energy. That's why I flew down to the University of Texas to make this video, and ran an experiment on UZrH fuel using a real nuclear reactor. I think you're going to love it. HD version at the link in my bio, and thank you to Fifty Years Fund for helping make this episode happen. 00:00 — What if nuclear power didn't have to be dangerous? 01:09 — Introducing Aalo Atomics 02:20 — UT Austin TRIGA reactor tour & overview 04:26 — Nuclear energy 101 05:27 — The experiment: control rod ejection 06:57 — Experimental results: power, energy, temperature 08:22 — "Negative Temperature Coefficient of Reactivity" 09:41 — Why isn't everyone using this? 10:32 — Aalo's bet: adapting UZrH for power production 11:40 — The future of nuclear power

134,501 просмотров • 1 год назад

I made a space-themed picture book for kids. It's called "REAL SPACE SHIPS," and it's available for purchase and free download! Zero words. Just REAL pictures of rockets, satellites, & spacecraft: from Apollo to the Space Shuttle, from the ISS to commercial space, and more.

I made a space-themed picture book for kids. It's called "REAL SPACE SHIPS," and it's available for purchase and free download! Zero words. Just REAL pictures of rockets, satellites, & spacecraft: from Apollo to the Space Shuttle, from the ISS to commercial space, and more.

43,413 просмотров • 7 месяцев назад

Robinhood co-founder Baiju Bhatt is back with a new company — but it's not finance, it's space lasers. At @AetherfluxUSA, Baiju is building both: ‣ an expeditionary power source for America's warfighters ‣ the beginnings of humanity's first Dyson Sphere It's a constellation of satellites in Low Earth Orbit that beam solar power down to Earth using lasers. I invited him to my factory to ask about how he's building it, and why. Chapters: 00:00 — Why is the Robinhood co-founder starting a space company? 05:11 — Introducing Aetherflux: the American energy grid in orbit 10:30 — The energy cost & energy opportunity 18:24 — “You’re not a space company until you have something in space.” 20:12 — What are the hardest parts of engineering this product? 25:27 — Figuring out how to build a hyper-ambitious company from zero 28:06 — How do you get from a demo to the ultimate vision? 32:25 — “What’s an industry that could exist, that doesn’t exist right now?” 35:28 — American innovation is a juggernaut 39:23 — Expeditionary power for the Department of Defense & disaster response 44:50 — The analogy between Robinhood and Aetherflux 47:41 — Assigned watching, playing, and reading from Baiju

Robinhood co-founder Baiju Bhatt is back with a new company — but it's not finance, it's space lasers. At @AetherfluxUSA, Baiju is building both: ‣ an expeditionary power source for America's warfighters ‣ the beginnings of humanity's first Dyson Sphere It's a constellation of satellites in Low Earth Orbit that beam solar power down to Earth using lasers. I invited him to my factory to ask about how he's building it, and why. Chapters: 00:00 — Why is the Robinhood co-founder starting a space company? 05:11 — Introducing Aetherflux: the American energy grid in orbit 10:30 — The energy cost & energy opportunity 18:24 — “You’re not a space company until you have something in space.” 20:12 — What are the hardest parts of engineering this product? 25:27 — Figuring out how to build a hyper-ambitious company from zero 28:06 — How do you get from a demo to the ultimate vision? 32:25 — “What’s an industry that could exist, that doesn’t exist right now?” 35:28 — American innovation is a juggernaut 39:23 — Expeditionary power for the Department of Defense & disaster response 44:50 — The analogy between Robinhood and Aetherflux 47:41 — Assigned watching, playing, and reading from Baiju

86,267 просмотров • 1 год назад

It's time for a second golden age of American manufacturing And we'll document our piece of it — subscribe to watch us cut metal and build satellites

It's time for a second golden age of American manufacturing And we'll document our piece of it — subscribe to watch us cut metal and build satellites

76,051 просмотров • 1 год назад

Ulysses is coming out of stealth today with: ‣ $1 million in revenue ‣ $2 million raised ‣ 5 hardware generations ...one year after their founding. They're building autonomous underwater drones — first to restore seagrass, and someday to counteract narco-subs. Ulysses Ecosystem Engineering co-founder and CEO Akhil Voorakkara met me at my office in San Francisco to talk through the technical details. HD Version at the link in my bio. Timestamps: 00:00 — Introducing Ulysses 02:20 — What is their robot capable of? 04:20 — How are they iterating so quickly through hardware prototypes? 12:57 — Why not buy more off the shelf? 16:15 — What technical requirements drove the hardware design? 21:06 — What other designs inspired this one? 23:28 — Underwater Design 101 30:38 — Why make it autonomous? 32:39 — What is their approach to autonomy? 36:44 — How did Ulysses decide to focus on sea restoration? 44:47 — Who else is building underwater drones? 47:57 — How do their drones differ from the more expensive existing ones? 49:05 — What limits drone working lifetime? 50:35 — How can you make technical progress with <5 employees? 54:51 — What's the next technical milestone to clear?

Ulysses is coming out of stealth today with: ‣ $1 million in revenue ‣ $2 million raised ‣ 5 hardware generations ...one year after their founding. They're building autonomous underwater drones — first to restore seagrass, and someday to counteract narco-subs. Ulysses Ecosystem Engineering co-founder and CEO Akhil Voorakkara met me at my office in San Francisco to talk through the technical details. HD Version at the link in my bio. Timestamps: 00:00 — Introducing Ulysses 02:20 — What is their robot capable of? 04:20 — How are they iterating so quickly through hardware prototypes? 12:57 — Why not buy more off the shelf? 16:15 — What technical requirements drove the hardware design? 21:06 — What other designs inspired this one? 23:28 — Underwater Design 101 30:38 — Why make it autonomous? 32:39 — What is their approach to autonomy? 36:44 — How did Ulysses decide to focus on sea restoration? 44:47 — Who else is building underwater drones? 47:57 — How do their drones differ from the more expensive existing ones? 49:05 — What limits drone working lifetime? 50:35 — How can you make technical progress with <5 employees? 54:51 — What's the next technical milestone to clear?

79,484 просмотров • 1 год назад

We at Astranis Space Technologies have resolved to yap less & cut more metal. Here's how we machined this 80 kg block of aluminum down to a 2.25 kg part.

We at Astranis Space Technologies have resolved to yap less & cut more metal. Here's how we machined this 80 kg block of aluminum down to a 2.25 kg part.

48,832 просмотров • 1 год назад

ON STATION AND OPERATIONAL, BABY!

ON STATION AND OPERATIONAL, BABY!

43,078 просмотров • 11 месяцев назад