H3
Launch vehicleWikipedia
5
MENTIONS
2
EPISODES
2
PODCASTS
Search complete. 5 mentions across 2 episodes found for "H3".
Sep 17, 2026
Episode 137: Bouncing on Phobos. MMX – Mars Sample Return Mission
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7:45Stefan UlamecGUEST
hopefully will be launched in October this year from Tanegashima.
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7:50Stefan UlamecGUEST
It was already planned to be launched in 2024 when there turned out to be some issues with the launcher, the H3 rocket, so it had to be As you know, launch windows to Mars only occur every second year, so you have to wait for two years.
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8:10Stefan UlamecGUEST
I think we could use these two years very well to improve the mission and add tests and improve software.
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8:20speaker_0HOST
at the moment schedule for October launch this year and if you miss that you have to wait another two years but presumably you're quite confident that we'll launch in this launch I'm
Artemis 2 Laser Comms, Exoplanets Near Black Holes, Japan's Moon Transformer & H3 Rocket Return
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16:17Alya Al NuaimiHOST
Well, let's say years before being retired, I can say.
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16:20Alya Al NuaimiHOST
Now, H3 had a tough journey, of course, getting started.
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16:24Alya Al NuaimiHOST
Its very first launch back in 2023 failed.
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16:26Alya Al NuaimiHOST
Then it bounced back, flew five successful missions in a row.
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16:48Alya Al NuaimiHOST
The small damaged piece caused a chain reaction and the whole mission was lost.
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16:53Alya Al NuaimiHOST
JAXA went back to the drawing board, they fixed the problem, they upgraded the rocket and this time they added something new.
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17:01Alya Al NuaimiHOST
They flew H3 with three engines for the very first time instead of the usual two.
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17:07Alya Al NuaimiHOST
So there's more power, more thrust and more confidence with that rocket.