The Atlantis Project

A Tethered Ring is a dynamic structure that can cost-effectively support space launch facilities, transportation infrastructure, and a sizable human settlement.

[The Atlantis Project @TetheredRing]

@FareedZakaria @ariel_ekblaw @aurelia_labs It's hard to believe that some people are still spreading misinformation about rapidly falling launch costs, even after NASA published a study in 2025 showing that launch cost per kg is actually rising.

[The Atlantis Project @TetheredRing]

@FutureJurvetson Great, except that points 8, 9, and 10 and the green line are all completely inaccurate. Divide Falcon 9's 69.85M lowest cost per mission by its 12,300 kg payload in the lowest-cost RTLS configuration and you get $5679 per kg in 2026, which is just another point on the red line.

[The Atlantis Project @TetheredRing]

@Aku_700 @NASA_LSP @SpaceX NASA optimized for best real performance whereas Elon optimized for best public perception of performance. https://t.co/yXnCRushjg

[The Atlantis Project @TetheredRing]

John Jossy published a well-crafted article on the economic benefits of the Variable Pitch Screw Launch system in Space Settlement Progress, an open-access journal focused on advanced tech for solar system settlement and beyond: https://t.co/ScdYqEmBVu

[National Space Society @nss]

NSS LEADER GREG AUTRY TAPPED FOR SENIOR NASA POSITION

NSS welcomes the nomination of Prof @GregWAutry, NSS VP for Space Development, as NASA Chief Financial Officer.

"Dr. Autry is an outstanding choice for NASA CFO," said @Isaac_A_Arthur, NSS President.

https://t.co/IqoxxYIeSc

[The Atlantis Project @TetheredRing]

New video out now on how we can ensure human spaceflight policy is driven by facts, not wishful thinking: https://t.co/GItsrsf2n0

[The Atlantis Project @TetheredRing]

Starship IFT-8 Telemetry. Earlier flights' data can be found by watching "Why Understanding Starship’s True Capabilities is Critical" on YouTube.

[The Atlantis Project @TetheredRing]

@planet4589 Can you (or have you) explained your methodology? Are you scraping data from SpaceX's broadcast or using some other satellite tracking service. If SpaceX, are you assuming their speed data is ECEF or Inertial?

[The Atlantis Project @TetheredRing]

Isaac Arthur will be releasing a new video called "Mass Drivers versus Rockets" on Jan 9th. It's highly educational! https://t.co/AOBk3ykQdC

[The Atlantis Project @TetheredRing]

The Electromagnetic Launch Conference is back! Very technical and very international. It was held in Amsterdam in September this year and was well attended.

[The Atlantis Project @TetheredRing]

Phil's presentation at the 2024 International Space Development Conference turned out to be a hit on YouTube - 125K views! https://t.co/mzcs0GUN3r

[The Atlantis Project @TetheredRing]

@elonmusk @WallStreetSilv What is a "standard Earth reference orbit" exactly?

[The Atlantis Project @TetheredRing]

@planet4589 Did you work out the ECI velocity at apogee from broadcast numbers or... ?

[The Atlantis Project @TetheredRing]

Phil Swan presented at Ascend 2023 in Vegas. He discussed the favorable value proposition associated with off-world expansion, the hard facts on launch costs, and the feasibility of launch infrastructure. The presentation now available on YouTube: https://t.co/6wyp83yIsF

[The Atlantis Project @TetheredRing]

Graviton Media just released a fast-paced, 12-minute long video about Tethered Rings on YouTube. https://t.co/wOUtYq7JGD

[The Atlantis Project @TetheredRing]

@davehuntsman @SciGuySpace There's another independent analysis here: https://t.co/z9wGOnG8ob

[The Atlantis Project @TetheredRing]

Phil Swan will be presenting at the 18th International Symposium on Magnetic Bearings (ISMB18). This year the conference will take place in Lyon, France from July 18th to 21st, 2023.
https://t.co/BNfrZWb7XM

[The Atlantis Project @TetheredRing]

Phil Swan just presented at the International Space Development Conference (ISDC2023). His second talk, on space launch infrastructure, has been uploaded to YouTube: https://t.co/mZMzt6JG4r

[The Atlantis Project @TetheredRing]

The papers that were presented at the 2023 IEEE Aerospace Conference have been published in the IEEE Xplore Digital Library, and are now available. The 19-page Tethered Ring paper can be found here: https://t.co/WVTDOnxozm

[The Atlantis Project @TetheredRing]

A new video has been uploaded! Topic: Using digital twins to help promote advanced infrastructure concepts https://t.co/GMPbrfBno4