Casey Handmer @CJHandmer
Physicist, Immigrant, Pilot, Dad. Former Caltech, Hyperloop, NASA JPL. Founder @terraformindies. Hiring! caseyhandmer.com NASAdena Joined June 2012-
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Going back for more, now a post about the Australian immigration system. The TL;DR: is just use a market-based mechanism to allocate scarcity instead of colossal torrents of bureaucratic process that have obviously failed. caseyhandmer.wordpress.com/2026/06/10/how…
Not content with kicking the hornet's nest just once, I have written another post about Australian policy, this time on its failure to aggressively modernize its defense force in response to four years of data from Ukraine and other contemporary theaters. Somehow, Australia
Time to finally fix Trespasser!
Has anyone put a hydrofoil on an e-bike? I'm ready for the amphibious riding experience.
This entire event will be confusing as hell for posterity. "What do you mean you used a robot boat to rescue two human helicopter pilots in a war zone?" "Ha ha gramps, you had robot boats but not robot helicopters that's a good one." Note that Homer's depiction of war chariots also doesn't quite make sense.
This was an absolutely massive win for @Saronic And by extension the broader US Defense Tech Ecosystem And also the American Warfighter I’m not an investor in Saronic but believe in giving praise when it’s due Bravo 👏
I guess I should tell a VC horror story. I probably shouldn't say who but I was invited to breakfast with a guy who invented the web browser, ostensibly to discuss American Dynamism and synthetic chemistry. Anyway, what I thought was a brief warm up discussion turned into a high speed monologue on James Burnham that was so long I lost all sense of space, time, and feeling in my lower legs. You might think there's only so much that can be said about James Burnham but that is incorrect. It turns out to be the Oracular source of write only line noise that powers all of SSL/TLS on the modern Internet. SpaceX makes about a billion dollars a year just retransmitting the self-encrypting ideas of Burnham back and forth through the atmosphere. This incidentally also disproves Dark Forest Theory and solves the Fermi Paradox.
Granite Act Now!
Our statement on the UK government’s demand that all content on all devices sold or used in the country be scanned, on the presumption of nudity, using a dystopian combination of age verification and content scanning. This proposal will not safeguard children. It endangers us
@lukepuplett Yes, and adverse selection exists.
Australia can double its birth rate with two changes: double the number of houses, halve the number of taxes.
Australia’s fertility rate has plummeted. They’ve hit the lowest rate in history at 1.48 — well below the 2.1 replacement rate. The average age of mothers was 25 in 1971, and now it’s 32. This is a human catastrophe.
@harshad1313 Repressive totalitarian state?
@l46715387 Solar energy costs 0.1% +- 0.02% of corn.
The bear case for SpaceX is that we humans don't find a way to feed AIs with space solar power and instead they convert Earth's crust into solar powered computronium, which will cause ... problems for agriculture. Among other things.
@IterIntellectus Harnessing even a millionth of the Sun’s power, which is extremely difficult, results in an economic value far more than a million times than that of Earth’s current entire economy
It's not hard to get a Russian visa. $100 for business visa and invitation.
Have said for years that Russia should abandon strict reciprocal visa rules and make it as easy as possible for Westerners to visit. Let people see Moscow, Petersburg, Novogorod, Kazan, Sochi, Lake Baikal and ordinary Russian life for themselves, without the filter of
@shaunmmaguire Even Putin is impressed.
Terraform Industries @TerraformIndies
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Eli Dourado @elidourado
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Robotbeat🗽 ➐ @Robotbeat
14K Followers 3K Following “Only we are Earthseed. And the destiny of Earthseed is to take root among the stars.” —Octavia Butler (tweets don't reflect employer policy)
Phil Metzger @DrPhiltill
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Peter Hague @peterrhague
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Jason Crawford @jasoncrawford
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ToughSF @ToughSf
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Ben Reinhardt @Ben_Reinhardt
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José Luis Ricón Fer... @ArtirKel
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mattparlmer 🪐 🌷 @mattparlmer
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Christian Davenport @SpaceDavenport
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Ken Kirtland IV @KenKirtland17
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Caleb Watney @calebwatney
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Dennis Wingo @wingod
10K Followers 5K Following 50 years ago high minded people said, forget space, fix the earth. That didn't work. Now its our turn, let us develop the space economy to fix the Earth.
Austin Vernon @Vernon3Austin
6K Followers 194 Following Making ultra cheap thermal energy storage at Standard Thermal. https://t.co/Rx6SzD7vgm ⬇️ I write a blog about energy and technology
Loren Grush @lorengrush
52K Followers 1K Following Space reporter at Bloomberg @business | Order my book The Six, out now! | Send me news tips: Signal username lorengrush.56 or email [email protected]
Byrne Hobart @ByrneHobart
60K Followers 2K Following The John Henry of excessive use of the em-dash. Tweets are map, not territory. Co-author: Boom (Stripe Press): https://t.co/u8do6HYFRF https://t.co/2zMEobDlr1
David Ebrahimzadeh @DEbrahimzadeh
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Tom @Tom74120244
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Salted Ether @SaltedEther
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Lee Kuan Yappin @asianvalues
48 Followers 58 Following If I wanted to remain anonymous this isn’t how I’d do it. OpSec is an illusion.
🇺🇸 Márquez �... @elsowellpr
765 Followers 339 Following En la Derecha, católico del rito bizantino, hijo de inmigrantes nicaragüences. Market Operator at the Chicago Mercantile Exchange (NQ/GC). Funded by @TopStep
Ravinder Matte @rmatte
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Aaron Green @aaronggreen
995 Followers 340 Following @NeuraSignal Ops - Robotic ultrasound. Conscience before Consciousness. Defensive Cybersec. On Sabbatical. Do V&V.
Richard Janezic @rjanezic
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matteo @matteo423815
1 Followers 20 Following
Xu Rayson @rayson_xu
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"Eacho" (EACCO) ✝�... @Nee_Nihilo
625 Followers 5K Following I live my life trying to never do anything I'd be embarrassed to get caught doing.
Themba M Tshabalala @Themba_M_T
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Suraj @Suraj99425860
14 Followers 717 Following
Davide Dukcevich @ddukcevich
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22 Followers 117 Following
Westernest @PresbyPilled
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Tyrus G @Tyrus_G
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Chris White @FiestaBlanco
485 Followers 748 Following Existential Detective, Gentleman Scoundrel, All-Around Huckleberry
David Byrne @David_Byrne1
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Bryan Butler @bbutler1
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Julie Ferguson @JulieFergu7877
162 Followers 1K Following
Nico @nico___suarez
453 Followers 3K Following Artist. Investor. Advisor. Tweets are my own, not ChatGPT.
fdescamps @fdescamps
844 Followers 6K Following
P Rajan @prajan
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balsas @balsas39750
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user137 @user137174109
3 Followers 71 Following
Scotch McClure @scotchmcclure
20K Followers 3K Following ⚕️CEO @ https://t.co/DHYMFSYeY9 - developing Biomimetic Immune System 🤖 Chair @ https://t.co/ucoF0rYRRk - Your AI should be private.
Finn McCool @FinnMcCool917
234 Followers 4K Following
randy @ryxornav
243 Followers 5K Following
M @011235813H
193 Followers 2K Following
Not Your Average Joe @averagejoe27
264 Followers 3K Following Follow me for curated reposts of space, science, politics, comedy, …and a bunch of classical and renaissance art.
shea @sheadotdev
2 Followers 86 Following
indocnito @indocnito
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Ralphael Lundt @RLundt20993
55 Followers 7K Following
James Altucher @jaltucher
224K Followers 19K Following For some reason, I've turned myself inside out and all my guts have spilled onto my blog. Truth and vulnerability or the currency of content. NM in chess.
Anjuli Pierce @anjulipie
773 Followers 2K Following Learning to prompt the future @ https://t.co/rF3Mgd4ZIH
Radnor Morris @MorrisRadnor
356 Followers 4K Following Patriot and Buckeye (Go Bucks!). standing up for what’s right (and just) regardless of party/caste/creed/religion
Terraform Industries @TerraformIndies
20K Followers 858 Following We make cheap natural gas from sunlight and air
Tom Mueller @lrocket
92K Followers 330 Following Liquid rocket engine development, racecar driver, grandfather, CEO and CTO at Impulse https://t.co/XBThLja8eL
Eli Dourado @elidourado
45K Followers 509 Following Philanthrocapitalism at @AsteraInstitute. 🚀 tfp/acc
Robotbeat🗽 ➐ @Robotbeat
14K Followers 3K Following “Only we are Earthseed. And the destiny of Earthseed is to take root among the stars.” —Octavia Butler (tweets don't reflect employer policy)
Michael Nielsen @michael_nielsen
119K Followers 5K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Tim Ellis @thetimellis
53K Followers 105 Following Cofounder, Board Member, & fmr CEO of @RelativitySpace
Phil Metzger @DrPhiltill
101K Followers 643 Following Director, Stephen W. Hawking Center for Microgravity Research & Education @UCF. Prev: co-founder NASA KSC Swamp Works. Space Mining. Space Settlement. Science.
Jeff Foust @jeff_foust
108K Followers 1K Following Senior writer, @SpaceNews_Inc. Tips? DMs open, email [email protected], or on Signal: jfoust.58. Also @jfoust.bsky.social.
Peter Hague @peterrhague
74K Followers 3K Following Solutionist. Astrophysics PhD and scientific software engineer. Dad of 2. Let’s colonise the solar system together. Please visit the link below to read my blog:
Michael Sheetz @thesheetztweetz
191K Followers 429 Following Director of Investor Relations @FireflySpace | Previously @CNBC
Jason Crawford @jasoncrawford
44K Followers 4K Following I write and speak about the history & philosophy of progress. Founder, @rootsofprogress. Host of the Progress Conference. Author, The Techno-Humanist Manifesto.
ToughSF @ToughSf
35K Followers 483 Following Matterbeam. Author of the ToughSF blog. Original SuperNerd. Ex-Kurzgesagt Duck. Freelance writer. Discord https://t.co/Q4cBKnMMoS
Robert Zubrin @robert_zubrin
24K Followers 5K Following Science, Space Exploration, & Energy Technology. Freethinker. For human liberty and the Western alliance.
Ben Reinhardt @Ben_Reinhardt
12K Followers 553 Following Dare mighty things! Journeyman wondersmith @spec__tech. Past: space and eldercare robots, AR, medieval history, etc. Long games. 🏴☠️🪐🐉
Alexey Guzey @alexeyguzey
36K Followers 1K Following https://t.co/YTeUJ2NSye, https://t.co/8HIEyR2vl7, @openai; in pursuit of a just, beautiful future.
José Luis Ricón Fer... @ArtirKel
24K Followers 1K Following Head of Theory at @RetroBio_ , enjoyer of things, blog: https://t.co/8xDYgWBhx9
mattparlmer 🪐 🌷 @mattparlmer
35K Followers 12K Following Recursively self-improving and self-replicating factories @genfabco — rationalist and friend of the future
Christian Davenport @SpaceDavenport
53K Followers 2K Following Author of ROCKET DREAMS: https://t.co/mq2qDFdWcS and THE SPACE BARONS https://t.co/FdNP63PKMk
Ken Kirtland IV @KenKirtland17
17K Followers 1K Following Industrial Designer - Georgia Tech 2020 - 💍 Caitlin. Space enthusiast, Apogee YouTube Creator
Scotch McClure @scotchmcclure
20K Followers 3K Following ⚕️CEO @ https://t.co/DHYMFSYeY9 - developing Biomimetic Immune System 🤖 Chair @ https://t.co/ucoF0rYRRk - Your AI should be private.
David Byrne @David_Byrne1
5K Followers 6K Following Ph.D. in history. Author of James Burnham: An Intellectual Biography.
Benjamin Arya 🧬 @BenjaminAryaMD
481 Followers 1K Following Genome engineering and lifespan extension
Cornelius Schmitt @Zellerfella
654 Followers 99 Following Here to bring printed shoes on every foot @TheZellerfelds
Matthew Prince 🌥 @eastdakota
217K Followers 301 Following A little bit geek, wonk, and nerd. Repeat entrepreneur, recovering lawyer, and former ski instructor. Co-founder & CEO of Cloudflare (NYSE: NET).
Claire Lehmann @clairlemon
251K Followers 7K Following Founder, editor @quillette, contributing writer @australian, @thedispatch 📧 subscribe: https://t.co/04OP3ssOXf
Dario prescenzi @___Dario_____
5K Followers 788 Following Those on the margins often come to control the center
Dr Elizabeth Buchanan @BuchananLiz
13K Followers 3K Following Polar Geopolitics & Strategic Studies / Associate @IRSEM1 / US-Aus Alliance @CFTNI / Senior Fellow @ASPI_org / FMR @DefenceAust /
Benjamin De Kraker @BenjaminDEKR
44K Followers 8K Following AI + tech. Dayjob: Nuclear power Prev: Grok / xAI
Greg Koenig @gak_pdx
16K Followers 1K Following Follow me on Twitter! You'll go where I go, defile what I defile, eat who I eat. He/Supreme Allied Machine Commander
Enhanced Games @enhanced_games
61K Followers 315 Following BUILD YOUR PROTOCOL AT https://t.co/XzD1McSxo4
Gav Meister @GavinBrx
1K Followers 906 Following Retired economist & Producer. Australia First 🇦🇺. Same failed policies = same pain. Cut the spin, research the facts, expose the deflections. Patriotic.
Deputy Administrator ... @NASADepAdmin
5K Followers 5 Following Serving President Donald J. Trump as the 16th @NASA Deputy Administrator | Working alongside @NASAAdmin to lead the next Golden Age of space discovery 🚀
Jon Flaig @jonrobflaig
96 Followers 552 Following Founder/CEO @getmise — a voice-first agentic AI AGM for restaurants. Restaurant operator turned AI-native builder. Working toward lunar supply chains.
Charles Curran @charliebcurran
83K Followers 4K Following Filmmaker // Director of See Know Evil // Menace Studio
Michael McGuiness @mikemcg0
17K Followers 4K Following writer @a16z | creator of @startuparchive_ | writer @etherealize_io, including https://t.co/nRqo7eYeM4
Matt Solomon @msolomon44
5K Followers 1K Following Security at @OPLabsPBC. Formerly built @UmbraCash and more at @ScopeLift
Sheldon Kimber @SheldonKimber
4K Followers 878 Following Intersect CEO, entrepreneur, energy markets, finance and tech geek, @BerkeleyHaas @KenyonCollege
bronzebust @bronzebust
3K Followers 462 Following To strive, to seek, to find—and not to yield. 📍 Chicago
Jim Weisser @jimbudweisser
406 Followers 1K Following SignTime co-founder and CEO, past ACCJ governor/VP occasional angel and working hard on digital transformation. In Tokyo since Internet was measured by baud.
Matt Popovich @mpopv
7K Followers 5K Following staff ai engineer @forge_global, webmaster @makeemoji, ex @awscloud. tech, housing, and future enjoyer. radical normie lib
𒐪 @SHL0MS
87K Followers 999 Following ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏⃤⃟⃞⃝ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏
Daniel Friedman @DanFriedman81
23K Followers 1K Following Author of mystery novels, including DON'T EVER GET OLD, nominated for the Edgar, Anthony and Thriller awards. Winner of the Macavity award.
Brandon Fuller @fuller_brandon
3K Followers 971 Following Executive Vice President @ManhattanInst. Views mine.
Sebastian Caliri @SebastianCaliri
8K Followers 368 Following Partner @8vc, former @palantirtech @stanfordmed
Charles Xiao @charlesxiao_
29 Followers 67 Following @AEatIllinois | direct air capture @terraformindies
Anton Leicht @anton_d_leicht
5K Followers 223 Following AI & political economy | fellow @CarnegieEndow | allegro ma non tanto
Ryan Hass @ryanl_hass
40K Followers 1K Following Brookings scholar on China, Taiwan, Asia. Sr Advisor at The Scowcroft Group, McLarty Associates. Husband to Meredith and father of four. Author of “Stronger.”
White House Task Forc... @WHFraudTF
210K Followers 47 Following Ending fraud against the American taxpayer.
Anthony Severin @aiseverin
46 Followers 417 Following I want to make it easier for people to do good things; helping the law work better and for more people. Christian. Grad of @DukeLaw and @Baylor.
Asian Dawn @AsianDawn4
132K Followers 218 Following Center-Right | Anti-Woke | Realist | Anti-Boba Liberal | #SoySauceSupremacist | R.I.P.⛩️ Hans Gruber
Tom Stevenson @TsT3v0
366 Followers 4K Following technology + Metal @ CTRL - https://t.co/0rzE475QGr
Megan Gafford @megan_gafford
2K Followers 1K Following Artist and writer at Fashionably Late Takes (I can't draw fast enough for hot takes) ✏️ Contributer at Quillette ✒️
Math Academy @_MathAcademy_
38K Followers 122 Following Master math 4x more efficiently than a traditional classroom. Individualized, adaptive, AI-powered and fully automated. Accredited courses 4th grade-University.
Alexander Girau @AlexanderGirau
2K Followers 773 Following CEO/Co-Founder @G1_Group1; Founder/Advisor @ADVANOtech; Energy Transition Fellow @EnergyUT; School: @Tulane, @ycombinator (S17)
Alexandr Wang @alexandr_wang
493K Followers 858 Following chief ai officer @meta, founder @scale_ai. rational in the fullness of time
E1 Ventures 🇺🇸 @e1_ventures
465 Followers 601 Following Deep, frontier, and hard tech. Learn more at https://t.co/hq0w7DOYRg
Matt Van Horn @mvanhorn
33K Followers 5K Following Co-founded June ("self-driving oven" acquired by @webergrills) & the co that became @Lyft. Building again, more soon. OS: @slashlast30days 30k★ @ppressdev 4.4k★





























