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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://fosstodon.org/users/AkaSci/statuses/114634246844444519">AkaSci 🛰️ (akasci@fosstodon.org)'s status on Friday, 06-Jun-2025 22:08:40 JST</a><a href="https://fosstodon.org/@AkaSci" title="akasci@fosstodon.org"><img src="https://gnusocial.jp/avatar/20805-48-20221219024513.webp" width="48" height="48" alt="AkaSci 🛰️" style="position: absolute; left: 0; top: 0;">AkaSci 🛰️</a><div><a href="https://fosstodon.org/@AkaSci/114633900975499336" rel="in-reply-to">in reply to</a></div></section><article><p>The ispace HAKUTO-R mission 1 crash-landed for a different reason on April 25, 2023.</p><p>Around 5 km altitude, the onboard software incorrectly presumed that the radar altimeter was faulty because its reading of 5 km diverged from that of the inertial measurement unit. The spacecraft descended slowly thinking it was near the surface, ran out of fuel and then crashed into the lunar surface at more than 100 meters per second.</p><p><a href="https://en.wikipedia.org/wiki/Hakuto-R_Mission_1" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Hakuto-R_Mission_1</a><br><a href="https://spacenews.com/software-problem-blamed-for-ispace-lunar-lander-crash/" rel="nofollow noreferrer">https://spacenews.com/software-problem-blamed-for-ispace-lunar-lander-crash/</a><br>12/n</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5158878#notice-10118853">In conversation</a><time datetime="2025-06-06T22:08:40+09:00" title="Friday, 06-Jun-2025 22:08:40 JST">about 15 days ago</time> <span>from <span><a href="https://fosstodon.org/@AkaSci/114634246844444519" rel="external" title="Sent from fosstodon.org via ActivityPub">fosstodon.org</a></span></span><a href="https://fosstodon.org/@AkaSci/114634246844444519">permalink</a><h4>Attachments</h4><ol><li><article><header><div>Domain not in remote thumbnail source whitelist: i0.wp.com</div><h5><a href="https://spacenews.com/software-problem-blamed-for-ispace-lunar-lander-crash/">Software problem blamed for ispace lunar lander crash</a></h5><div> from <span>Jeff Foust</span></div></header><div>A software glitch kept a lunar lander from properly determining its altitude, leading to a crash on its landing attempt last month, Japan's ispace said.</div><footer></footer></article></li></ol></footer></blockquote>

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AkaSci 🛰️ (akasci@fosstodon.org)'s status on Friday, 06-Jun-2025 22:08:40 JST AkaSci 🛰️
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The ispace HAKUTO-R mission 1 crash-landed for a different reason on April 25, 2023.
Around 5 km altitude, the onboard software incorrectly presumed that the radar altimeter was faulty because its reading of 5 km diverged from that of the inertial measurement unit. The spacecraft descended slowly thinking it was near the surface, ran out of fuel and then crashed into the lunar surface at more than 100 meters per second.
https://en.wikipedia.org/wiki/Hakuto-R_Mission_1
https://spacenews.com/software-problem-blamed-for-ispace-lunar-lander-crash/
12/n
In conversationabout 15 days ago from fosstodon.orgpermalink
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  Software problem blamed for ispace lunar lander crash
  from Jeff Foust
  A software glitch kept a lunar lander from properly determining its altitude, leading to a crash on its landing attempt last month, Japan's ispace said.

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