Comments by "H. de Jong" (@h.dejong2531) on "" video.

  1. For it to be useful, you need to cruise at 10km altitude. Not many UAVs can do that.
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  2. Spirit and Opportunity functioned for 10 years without needing a wiper.
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  3.  @stevef.8708  A brush attachment that can be proven to not be a risk for damaging the solar panel is going to cost a hell of a lot more than $3. And Spirit, Opportunity ran for ~10 years without needing one.
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  4.  @ekij133  I'll repeat the main point: Spirit and Opportunity never needed them. The panels were cleaned by dust devils often enough.
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  5. NASA has a Canberra with cameras in the nose that's been used for reentry observation.
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  6. Anything. $90M a year is a lot more than Hubble operations cost, for instance, for far less science (800 hours vs 8760 hours of observation, and far fewer papers)
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  7. Spirit and Opportunity functioned for 10 years without needing a wiper.
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  8. Experience with Spirit and Opportunity showed this wasn't necessary: their solar panels were cleaned regularly by dust devils.
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  9. Spirit and Opportunity ran for years without any of that.
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  10. Spirit and Opportunity functioned for 10 years without needing a wiper. NASA doesn't want to resurrect SOFIA: the astronomy community has been trying to kill it for years because its science return is low.
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  11. The ISS is not a good environment for a space telescope. 1. Far too much vibration from the astronauts moving around. 2. Far too much structure blocking your sight.
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  12. NASA doesn't want to resurrect SOFIA: the astronomy community has been trying to kill it for years because its science return is low.
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  13. You mean 'destroy the environment and flight safety'.
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  14. Because it's another failure point, it poses a risk to the solar panels (dragging something across a fragile panel will damage it), and previous missions never needed it: Spirit and Opportunity ran for years.
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  15. Yes, it should be possible. An amateur astronomer took this video about 5 days after launch: https://www.youtube.com/watch?v=9PM_ywxQ8OQ
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  16. and yet you're commenting on this video.
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