low-earth-orbit
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Stef Crum
Stef Crum is the CEO and co-founder of Reditus Space, an Atlanta aerospace startup building reusable spacecraft that return payloads from orbit so companies can manufacture in microgravity. A Georgia Tech PhD in space systems engineering who worked on orbital operations and reentry with NASA and the Space Force, Crum started Reditus with classmate Will Sherman after Georgia Tech's Create-X program, went through Y Combinator's Winter 2025 batch, raised a $7.1 million seed round, and was named to the Forbes 30 Under 30 Transportation and Aerospace list in 2026. His pitch is blunt: the innovation isn't getting to orbit, it's coming back.
Brian Manning
Brian Manning is the co-founder and CEO of Xona Space Systems, a Burlingame, California startup building Pulsar, a commercial alternative to GPS broadcast from a planned 258-satellite constellation in low-Earth orbit. A former SpaceX engineer who worked on the Falcon 9 thrust structure, Manning reunited eight Stanford aerospace graduates over pizza and beer in 2019 to chase a question nobody had answered: why has no one built a private, encrypted, centimeter-accurate navigation network? In 2022 Xona launched Huginn, the first commercial satellite navigation mission in orbit, and in March 2026 closed an oversubscribed $170 million Series C to scale manufacturing and begin deploying production satellites.
Felix Ejeckam
Felix Ejeckam is the Co-Founder and CEO of Akash Systems, a San Francisco-based deep-tech company that invented GaN-on-Diamond semiconductor technology - a breakthrough that enables dramatically better thermal management for both satellite communications and AI data center servers. A serial entrepreneur with two prior exits, Ejeckam holds 80+ patents and 100+ scientific publications, was named a World Economic Forum Technology Pioneer, and led Akash to a $68.2M CHIPS Act preliminary agreement and the world's first diamond-cooled NVIDIA GPU server deployment.