Why do most space telescopes (i.e. the Hubble) use reaction wheels instead of control moment gyros? - Quora
Astrosociology Research Institute (ARI) - Retweeted and shared Corey S. Powell (@coreyspowell): Good news (mostly) about the Hubble telescope: Despite the scary failure of a gyroscope it has two others working well.
![Hubble Telescope Observations on Hold After Gyroscope Failure | by Asgardia. space | Asgardia Space Nation | Medium Hubble Telescope Observations on Hold After Gyroscope Failure | by Asgardia. space | Asgardia Space Nation | Medium](https://miro.medium.com/max/1000/0*E2eoTPn2AsCDRty9.jpg)