Orbital data center startup Aetherflux is reportedly raising a Series B funding round at a $2 billion valuation.

According to reporting by the Wall Street Journal, citing sources familiar with the matter, Aetherflux aims to raise between $250 million and $300 million in the latest funding round, led by current investor Index Ventures.

Aetherflux plans to deliver high performance AI compute data centers in orbit, with the first data center node for commercial use targeted for Q1 2027.

The company said it aims to help solve access to energy for scaling AI infrastructure by pioneering orbital data center satellites to leverage solar power in space.

Aetherflux aims to deploy a constellation of satellites, dubbed “Galactic Brain.”

The company raised $50 million in a Series A round last year, led by Index Ventures and technology investment company Interlagos. The Series A round saw investment from Bill Gates’s Breakthrough Energy Ventures, Andreessen Horowitz, New Enterprise Associates, and actor Jared Leto. It has since raised an additional $30 million, according to Wall Street Journal’s sources.

Baiju Bhatt, founder of Aetherflux and co-founder of trading platform Robinhood, founded Aetherflux in 2024 after stepping down as a Robinhood executive. He seeded Aetherflux with an initial $10 million.

At its GTC 2026 conference earlier this month, Nvidia announced that it had developed a space-specific module of its Vera Rubin GPU-CPU platform, and would operate this compute hardware in orbit with the participation of a number of space companies, including Aetherflux.

In a video announcement last week, Bhatt said Aetherflux was collaborating with Nvidia to bring AI chips to space. Bhatt explained that the company will take Nvidia’s chips and “mature them to work in a radiation environment to survive some pretty extreme thermal environments, and, obviously, get powered by the sun in low–Earth orbit.”

In further comments, he said: “At Aetherflux, we’re pioneering a new paradigm for power and compute in space. Nvidia Vera Rubin delivers high-performance, energy-efficient AI at the Edge in orbit, powered by solar energy. This enables autonomous operations and mission-critical services, and unlocks scalable, space-based AI infrastructure beyond Earth.”