Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile
Joel C. Sercel, PhD

@joelsercel

Inventor; engineer; team leader; space technologist. CEO @TransAstra_Corp PhD @Caltech ME (plasma physics & space propulsion). 🇺🇸/acc Mars is a distraction.

ID: 1967144660

linkhttp://www.transastra.com calendar_today17-10-2013 16:15:52

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Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

If you fly in LEO you use a near polar sun synch orbit in which the solar array cuts through the atmosphere like a knife. Better is to fly in a very high orbit near Earth-Sun L1 where asteroid resources are energetically close to use as building materials.

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

To understand how far superior the Chinese space industry is to all elements of the U.S. industry (except SpaceX), consider that the Zhuque-3 has been in development for 26 months. The New Glenn has been in development for more than 260 months (it’s fair to say the New Glenn has

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

Yep. The strange thing is that the heaviest use of AI today by power users is software development, but in ten years there will be no significant app development not significant OS development etc... it will all be AIs developing AI. There will not be a spreadsheet app. If you

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

Good news! Crime in U.S. cities is down massively in the first half of 2025. Can't imaging why (JK), but lots of Americans are alive who would not be otherwise. Thousands of others who would have been traumatized victims and enjoying life without that. • New York City:

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

Elon's new posts about things we can do in space with fully reusable superheavy vehicles are important. I have been wondering for years when he would realize that there are much more important things to do in space before building a city on Mars. - Massive AI (and other) data

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

The lot behind our building seems lonely without multiple modular Sutter TKO observatories in integration and test! No worries, our testbed will be back up in a matter of days. Just gotta rebuild it.

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

There is this really (I mean really) smart guy I know (just barely but I read about him all the time) who has like ridiculous agency who is gonna get like a trillion dollars if Tesla is worth several trillion. Hmmmm..... Not gonna sell my Telsa stock. Hey Elon Musk I love

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

There is no conservative majority in the SCOTUS. The reis, for the first time in decades, a constitutional majority and a liberal minority. That is why they will do the right thing constitutionally and reject Trump's tariffs, in spite of the fact that they are clearly good for

Joel C. Sercel, PhD (@joelsercel) 's Twitter Profile Photo

While we are congratulating our friends at Blue Origin for their amazing landing today, also passing along this nice article that CNN posted about how TransAstra is transitioning from asteroid mining R&D to market-shaping reality.

Stephen Fleming (@stephenfleming) 's Twitter Profile Photo

In case anyone is interested, here’s my presentation to the @UArizona Mining Law Summit 2025. Topic: Mining the Moon, Mars, and other celestial bodies, with an emphasis on legal and policy issues. youtu.be/TOXrzbh05DI?si…