Stabilizing Earth’s temperature
Earth's climate has fluctuated wildly throughout history. Mankind has built civilization in a “goldilocks zone” — a moment in history when Earth was neither too hot, nor too cold. Yet, 2024 was the hottest year on record, and the changes are accelerating. We are deviating from that safe zone. This means more extreme weather, mass migration, crop failures, and resource conflicts. These are not distant projections. They are unfolding now, accelerating faster than our capacity to respond.
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Humanity needs a different class of solution. One that works at planetary scale. One that can be deployed this decade, not in some distant future. One that buys us time and protects us from overheating.
Throughout all of human history, we have stewarded and shaped our environment and built a world that could sustain billions of people. Humanity fixed the ozone hole, eradicated diseases, and built systems that transformed the world.
Earth’s hottest year can be behind us, not looming ahead.
The promise of
Sunlight Reflection
Sunlight Reflection Technology (SRT) has potential to cool Earth safely, rapidly, and reversibly.
Nature has already proven this works. The Earth’s atmosphere is full of small particles that reflect the sun's rays, with clouds being a prominent example. Natural atmospheric events throughout Earth's history have repeatedly demonstrated that reflecting sunlight can measurably cool the planet. What has been missing is the ability to deploy SRT safely for humans and the biosphere, tune it precisely, and govern it responsibly.​
Stardust is developing a full-stack solution to reflect minute amounts of sunlight:
Particles made from naturally occurring, human-safe materials
High-altitude deployment systems
Real-time atmospheric monitoring
​A safe, measurable, adjustable, and fully reversible system to stabilize Earth’s temperature
Our approach
We are an interdisciplinary team of 25 scientists, engineers, and academics working in collaboration with the larger scientific community to research and develop a real, actionable option to mitigate near-term catastrophic warming.
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Stardust particles are made of components which are abundant in nature, chemically inert in the stratosphere, and safe for humans and ecosystems. The particles naturally return to Earth's surface over time and recycle safely back into the biosphere.
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We are developing a fully-integrated system for tunable deployment that includes high-altitude deployment capability, atmospheric monitoring sensors, and predictive modeling.​​
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The beginning of 2026 will mark a new phase in our work, during which we'll start publishing key findings of our research together with our esteemed academic collaborators in peer-reviewed scientific literature.
We welcome all questions and comments: contact us.
Our mission requires engineers, scientists, technologists, and optimists: join Stardust.
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