Space AI infrastructure company Cowboy Space completes $275 million Series B funding, led by Index Ventures

According to Beating Monitoring, TechCrunch reports that Cowboy Space Corporation announced the completion of a $275 million Series B funding round, with a post-money valuation of $2 billion. This round was led by existing investor Index Ventures, with participation from Breakthrough Energy Ventures, Construct Capital, IVP, and SAIC. Previously, the company had raised a total of $80 million, with investors including Index Ventures, Breakthrough Energy Ventures, Andreessen Horowitz, and New Enterprise Associates.

The company’s founder and CEO Baiju Bhatt stated in an interview, “We are building our own rocket project.” He expects the company to complete its first launch by the end of 2028. Bhatt is the co-founder of the online brokerage platform Robinhood. He founded this company in 2024 under the name Aetherflux, initially planning to collect solar energy in space and transmit it back to Earth. Later, the concept of space data centers prompted the company to shift focus to researching how to directly utilize this power in orbit, and this practical need ultimately drove the company into rocket development, leading to a rebranding as Cowboy Space Corporation.

Bhatt believes that one of the company’s advantages is its focus on a single market—space data centers—and its unique rocket design. Traditional orbital rockets usually consist of two parts: the first stage booster that takes the rocket to the edge of space, and the second stage that carries the payload into orbit. Cowboy Space’s plan is to build the data center directly into the second stage of the rocket.