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The Case for Solar-Thermal Propulsion: Why We Led Portal's Series A

April 09, 2026

Analysis Portal Space Solar Thermal Propulsion

SummaryIn the last 18 months, operators have filed for more than 1.2 million satellites, an 80× increase over the ~15,000 active today. SpaceX filed for one million orbital data center satellites in January. Starcloud filed for 88,000. Blue Origin...

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