Space One cancels third Kairos rocket launch due to bad weather

Japan's private space company Space One canceled the launch of its third Kairos small rocket on Sunday due to unfavorable weather conditions. This setback delays the company's effort to become the first Japanese private firm to place satellites into orbit using a domestically developed rocket. The attempt scheduled for Wednesday last week was also postponed for the same reason.

Space One announced the cancellation of its 18-meter Kairos rocket launch on Sunday due to unfavorable weather conditions. This marks the second postponement in the past week, following the delay of an attempt scheduled for Wednesday, also caused by bad weather.

The company is striving to be the first Japanese private firm to successfully place satellites into orbit with a domestically developed rocket. However, it has encountered difficulties, with two failed launch attempts in 2024. The first Kairos rocket exploded shortly after liftoff in March, and the second flight was aborted roughly three minutes after launch in December.

This latest cancellation further hinders Space One's ambitions. The firm plans to reschedule once weather conditions improve.

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Illustration depicting the dramatic liftoff of Space One's Kairos No. 3 rocket from Space Port Kii before its mission abort.
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Japanese startup aborts Kairos No. 3 rocket flight after liftoff

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Japan's private space company Space One launched its Kairos No. 3 rocket on March 5 from Space Port Kii in Wakayama Prefecture but aborted the flight minutes later. This marks the third setback for the firm aiming to be the first private Japanese entity to place satellites into orbit.

Tokyo-based startup Space One has postponed the launch of its Kairos small rocket's No. 3 unit until March, citing a detailed weather analysis. The rocket is set to carry five satellites, with the launch window running until March 25.

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Tokyo-based space startup Space One canceled the launch of its Kairos No. 3 small rocket shortly before liftoff on March 4 from Spaceport Kii in Kushimoto, Wakayama Prefecture, after a safety system activated. The launch was scheduled for 11 a.m., but halted 30 seconds prior. The company plans a press conference that afternoon to explain the incident.

The Federal Aviation Administration (FAA) has grounded Blue Origin's New Glenn rocket following a partial failure during its third mission, NG-3, launched Sunday from Cape Canaveral Space Force Station. An upper-stage engine issue prevented the BlueBird 7 satellite from reaching its target 285-mile orbit, achieving only about 95 miles. This incident, the second grounding for the rocket, will halt flights pending investigation.

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NASA has overhauled its Artemis program, postponing the first human moon landing until the Artemis IV mission in early 2028. The changes, announced by Administrator Jared Isaacman on February 27, 2026, aim to increase launch frequency and reduce risks after repeated delays with the Space Launch System rocket. An additional test flight, now Artemis III, will focus on low-Earth orbit rendezvous with commercial lunar landers.

NASA has canceled the Exploration Upper Stage for its Space Launch System rocket as part of a major revision to the Artemis program. The decision, announced by Administrator Jared Isaacman, aims to accelerate lunar landings by focusing on surface activities and using more efficient upper stages. This move supports testing of human landers from SpaceX and Blue Origin ahead of missions in 2027 and 2028.

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Four astronauts are heading to the Moon for the first time in over 50 years. The crew launched at 18:35 local time from Cape Canaveral, Florida, aboard the Orion capsule atop the Space Launch System. The mission builds on Artemis 1 and sets milestones for women and non-white astronauts.

 

 

 

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