Stardust Solutions, an Israeli-American start-up developing technology to disperse reflective particles high in the atmosphere so that less sunlight reaches Earth, has raised $75m from investors and wants governments as customers.
The total includes a $60m round announced in October 2025 and led by Lowercarbon Capital, the climate technology investment firm co-founded by Chris Sacca. Other backers include Exor, the Agnelli family’s investment company and a major shareholder in Ferrari, along with Future Ventures, Future Positive, Lauder Partners, Attestor, Kindred Capital and former Facebook executive Matt Cohler.
Stardust was founded in March 2023 by Israeli physicists Yanai Yedvab, Amyad Spector and Eli Waxman. Yedvab and Spector previously worked as nuclear physicists for the Israeli government.
The company is registered in Delaware and headquartered outside Tel Aviv. It says it is not affiliated with the Israeli government.
Yedvab told Politico that investors were backing the idea that “we need a safe and responsible and controlled option for sunlight reflection.”
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