Going to space to heal earth ☂️
Joined March 2023
- Tweets 86
- Following 55
- Followers 121
- Likes 105
11 Photos and videos
Planetary Sunshade Institite retweeted
The newest episode of Inevitable & Obvious is live, with Ross Centers and Morgan Goodwin of the @SpaceSRM Planetary Sunshade Institute.
Last month I attended the first-ever Planetary Sunshade Workshop in Nottingham, and I learned a lot about where this field is right now. I came away convinced that building a sunshade is genuinely feasible.
Ross and Morgan sit at the center of this field, and across the episode they work through what it would take to build a sunshade, how you'd do the lunar metallurgy needed to manufacture large structures in space, and the argument that SpaceX is fundamentally a Dyson Swarm company, whose industrial base is also exactly what a sunshade for Earth would require. From there we get into why even fully renewable energy hits a planetary heat limit, how you'd make forty-kilometer solar sails out of moon dust, and who governs the climate once we can steer it.
This was super fun, and easily the most hardcore, in-the-weeds episode of the show so far. If you want a glimpse of where all this is heading over the next two decades, don't miss this one!
Link to the episode below. 👇
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We went deep - this might be the most comprehensive interview yet.
Dyson swarm, lunar mining, governance - it’s all here.
@paulgambill interviews @rosscenters and @mogmaar, getting to the heart of what a sunshade implies about humanity and space.
inevitableandobvious.com/p/a…
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Did you know, you can donate stock to the Planetary Sunshade Institute?
Just in case you know a friend who might find this interesting in the next few months
planetarysunshade.org/donate
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Planetary Sunshade Institite retweeted
🔟 Open-source space sunshade model released:
@SpaceSRM publishes irradiance model for orbital sunshade fleets to support CESM climate simulations and transparency in space-based SRM research.
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Deep dive on sunshades and climate cooling with Ross and @danmiller999 --
- What's really the deal with the moral hazard argument?
- Why is the trolly problem so misleading?
- How are sunshades and stratospheric aerosols complimentary?
youtube.com/watch?v=hlqBBRIE…
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Great to have you there!
May 28
I went to the first-ever Planetary Sunshade Workshop, and I went in wondering if this is a 2040s thing or a 22nd-century thing.
The engineering is early, but the economics look different than they did a few years ago. Space industrialization is building the infrastructure a sunshade would need. If you're already mining lunar aluminum for commercial purposes, the sunshade stops being a standalone trillion-dollar climate project and becomes a climate application running on that infrastructure.
I wrote up what I learned. Article linked below 👇
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New name, new logo, and an update to our theory of change:
1) sunlight reflection will be necessary
2) there are 2 planetary scale reflection methods: SAI and sunshades
3) these are complimentary
4) space industry is putting sunshades in reach
5) public benefit research now
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Because the climate is going to keep doing its thing
May 17
Lurking below the surface in the equatorial Pacific is possibly the most impressive blob of above average ocean temperatures we've ever recorded since we've had the ability to measure this stuff. When that enormous concentration of bath water reaches the surface over the coming weeks and months, it's going to release devastating consequences around the globe throughout the second half of the year. Get ready for severe droughts in parts of South America, Africa, and Australia, devastating monsoons in southern China, and a roaring southern jet all winter long in North America. When you combine this with the fertilizer crisis bubbling as a byproduct of current global events, there's going to be crop failure on a level most of us have never seen during the closing months of 2026. Hard to see how we avoid widespread deadly famines across multiple stretches of the planet at this point.
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Planetary Sunshade Institite retweeted
Join us for EarthSpace 2026 on Earth Day:
Jeff Overbeek, Technical Director @SpaceSRM on planetary sunshade climate work
Frank White, Author of "The Overview Effect”
Dr. Gülin Dede, Copernicus/ESA leader and analog astronaut
April 22 • 12 PM ET
Register for the webinar today: zoom.us/webinar/register/561…
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Mitigate climate change from space? Here’s why we need research now.
srm360.org/perspective/why-r…
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Planetary Sunshade Institite retweeted
31 Dec 2025
8️⃣ 1st IAA Planetary Sunshade Workshop set for May 2026, aiming to advance space-based climate cooling research and collaboration.
9️⃣ African Climate Intervention Research Hub (ACIRH) launches its website, centralizing African-led SRM expertise, collaboration, and resources.
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Planetary Sunshade Institite retweeted
17 Dec 2025
🚨 UPCOMING EVENT 🚨
1st IAA Planetary Sunshade Workshop by @SpaceSRM
🗓️13 - 15 May 2026
📍 University of Nottingham, UK
🚨Proposal Submission Deadline: 31 January 2026
🔗sunshadeworkshop.com/
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Planetary Sunshade Institite retweeted
24 Nov 2025
Best overview of the state of sunlight reflection as a field/movement/poliical topic I’ve seen yet
theatlantic.com/science/2025…
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14 Nov 2025
Really enjoyed our conversation!
13 Nov 2025
I spoke to @SpaceSRM this week and now I am way more hyped about how cool this could be. Gigantic space mirror fans with 40km long blades and you’d need thousands of them. 😱 No wonder everyone thinks it’s sci-fi. At the same time, all you need is financial incentive alignment and human ingenuity would take care of the rest. I’m now bullish space-based SRM in the multi-decade timeframe
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7 May 2025
We are excited and honored to be part of ARIA's "Exploring Climate Cooling" program.
Our team has been awarded: £400k over 15 months to work with Cornell University, National Center for Atmospheric Research, University of Nottingham, Redwire, & JPL
linkedin.com/posts/planetary…
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7 Mar 2025
Our ambassador Damien Clougher is giving a talk at SGx this week -- Say hi if you're attending!
SGx is a conference modeled on the Ted Talk format and is part of the larger Satellite conference in Washington, DC.
lnkd.in/gzNRredR
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28 Feb 2025
We have been asked to give a talk at the Arctic Repair Conference in June. Our Technical Director Jeff Overbeek will share the latest on engineering advances to build a sunshade to the leaders of arctic countries. Let us know if you'll be attending.
climaterepair.cam.ac.uk/even…
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8 Aug 2024
An important look into the discussion on geoengineering and the importance of rigorous discussion.
5 Aug 2024
Hmm, I returned from the backcountry to find NY Times put a story about me on front page of Sunday's paper.
My comment here: davidkeith.earth/comment-on-…
Feedback and questions are welcome.
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23 Jul 2024
Updates from DC
22 Jul 2024
Some climate change activists argue that cutting emissions and removing carbon dioxide from the atmosphere won’t be enough to stop global warming. These officials argue for a third step: sending a planetary sunshade into space to cut solar radiation.
payloadspace.com/planetary-s…
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11 May 2024
Looking up at the night sky tonight? Read our latest about how the Planetary Sunshade help predict space weather.
planetarysunshade.org/blog/s…
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