Japanese startup Space One is set to conduct its third launch attempt of the Kairos rocket today, March 3rd, aiming to finally reach orbit after two prior failures. The launch window opens at 9:00 PM EST (0200 GMT, 11:00 AM JST on March 4th) from Spaceport Kii in Wakayama Prefecture. The attempt will be streamed live through Space One’s channels and Space.com, with coverage beginning one hour before liftoff.
The Company’s Ambitions
Founded in 2018, Space One intends to become a significant competitor in the small-satellite launch sector. Their long-term goals include scaling operations to 20 launches annually by the end of the decade, eventually reaching 30 per year in the 2030s. The Kairos rocket represents the company’s first step towards achieving these objectives.
Rocket Specifications
The Kairos is a 59-foot (18-meter) tall, three-stage solid-fuel rocket with a liquid-propellant upper stage. It is designed to carry up to 330 pounds (150 kilograms) to sun-synchronous orbit. This capability positions Space One to service the growing demand for dedicated small satellite launches.
Previous Launch Failures
Space One’s first launch attempt in March 2024 ended prematurely just five seconds after liftoff, triggered by lower-than-expected thrust and velocity. The second attempt in December 2024 lasted longer but also ended in failure three minutes into flight, with the rocket being terminated at an altitude of 62 miles (100 kilometers) due to detected performance anomalies. This resulted in the loss of five satellites.
Why this matters: The failures are notable because Japan has traditionally relied on established space agencies like JAXA for orbital launches. Space One represents a new wave of private Japanese space companies. The repeated failures highlight the inherent risks in the industry, even for well-funded startups. Success today is critical for the company’s credibility and future fundraising efforts.
Space One’s third attempt will be closely watched by the industry and investors, as another failure could significantly hinder the company’s ambitious growth plans.
