The ASTRO-H (Hitomi) X-ray telescope was lost one month after launch in 2016 after entering an uncontrollable spin.
Sources
- As XRISM prepares to launch, what might the telescope reveal about the largest structures in our Universe? (cosmos.isas.jaxa.jp)
- https://spaceflightnow.com/2016/04/18/spinning-japanese-astronomy-satellite-may-be-beyond-saving/ (spaceflightnow.com)
- https://sci.esa.int/web/hitomi (sci.esa.int)
- https://heasarc.gsfc.nasa.gov/docs/hitomi (heasarc.gsfc.nasa.gov)
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