Casey Handmer (@CJHandmer) / X

Casey Handmer

40.9K posts

Casey Handmer

@CJHandmer

Physicist, Immigrant, Pilot, Dad. Former Caltech, Hyperloop, NASA JPL. Founder @terraformindies. Hiring!

NASAdena

Joined June 2012

Pinned
Casey Handmer
@CJHandmer
Jan 26
You can now enjoy a colored relief map render of this dataset streamed through Google Earth. Download the .kml file (drive.google.com/file/d/1bS1R9M…) and open it in your Google Earth Pro client. Enjoy!
Casey Handmer
@CJHandmer
Jan 8
Okay team. Here it is. A 28 m resolution global map of the planet Mars, viewable on Google Earth. The starter version with just 271,790,899,200 pixels. One of the most beautiful things I have ever made. Please, enjoy! drive.google.com/file/d/19SoSdM…
125K
Casey Handmer
@CJHandmer
Jun 8, 2024
My 5 year old just drew a ruler scale from memory. Then we got the square to check. As a dad, should I be worried?
19M
Casey Handmer
@CJHandmer
Jul 28, 2025
It took me 35 years to realize that the quality of your sleep affects not the following day, but the day after that. I don't like this at all.
1.6M
Casey Handmer
@CJHandmer
Jun 8, 2024
Replying to @cetello
True!
1.1M
Casey Handmer
@CJHandmer
Jun 8, 2024
Replying to @eldadviljoen
Three so far.
1.2M
Casey Handmer
@CJHandmer
Oct 11, 2024
People generally have no idea how much the past sucked. It's fun to study history but anyone who genuinely romanticizes the past I struggle to take seriously. Even the recent past was miserable by comparison with today, but the pre-industrial era was a total horror show on
1.9M
Casey Handmer
@CJHandmer
Jun 18, 2025
If China is dumping solar PV modules below cost to "hurt the US solar industry" then great, buy as many as we can, pave the south west, and make more power than anyone. Solar modules are machines that print money but require no moving parts, specialized labor, or detailed
Elon Musk
@elonmusk
Jun 18, 2025
They sure don’t
40M
Casey Handmer
@CJHandmer
Sep 26, 2024
Airlines realize that free fast wifi will save them money.
Sawyer Merritt
@SawyerMerritt
Sep 26, 2024
NEWS: Air France today announced that it will be installing SpaceX's @Starlink on its entire fleet. This new fast internet will be completely free of charge for all travelers. Installations begin in 2025.
1.6M
Casey Handmer
@CJHandmer
Oct 9, 2025
I realized the Doom graphics engine running on a pregnancy test CPU could handle all of North American Air Traffic Control. I'm going to sit down for a bit.
27M
Casey Handmer
@CJHandmer
Jul 10, 2024
Where is the 20000 word post explaining in exquisite prose and exhaustive detail the complete lineage of all the design features that go into the Logitech mouse? This has to be someone's on-spectrum special interest. This thing is the Sistine Chapel of consumer hardware, probably
1.4M
Casey Handmer
@CJHandmer
Aug 2, 2023
I have a PhD in theoretical physics, studied BCS theory, ran extremely complex numerical simulations, published papers on (optical) heterogeneous nanostructures, researched Landau level type stuff in 2 degree electron gas, ran calculations for SQUIDs. I still have no strong
5.6M
Casey Handmer
@CJHandmer
Nov 3, 2024
If you're mad about Peanut wait until you learn about Aaron Swartz.
1.1M
Casey Handmer
@CJHandmer
Sep 27, 2024
This is your periodic reminder that you should write a blog. It doesn't have to be fancy, it doesn't have to be well-edited. It just has to be something you can cumulatively add to over time. It's easiest to write about stuff you like, and ignore your non-existent audience.
454K
Casey Handmer
@CJHandmer
Jan 2, 2023
In 2023 it's still insane that we've decided to make housing, a technology at least 100 centuries old, scarce enough to consume a major fraction of GDP in a speculative unproductive deflationary asset that we could otherwise allocate to solving real problems.
764K