[LMB] OT: Arecibo

Howard Brazee howard at brazee.net
Sun Nov 22 18:40:25 GMT 2020



> On Nov 22, 2020, at 10:54 AM, Pouncer via Lois-Bujold <lois-bujold at lists.herald.co.uk> wrote:
> 
> >One of the functions Arecibo excels in is tracking asteroids
> >well enough to warn us of possible dangers to us.
> 
> Oh.  I had been under the impression that OPTICAL telescopes
> were somehow better at picking out dead ice and rocks in
> local environments, while RADIO-telescopes like Arecibo were
> more stellar ... so to speak. 

Arecibo actually uses radar.

https://www.naic.edu/ao/scientist-user-portal/planetary-sciences

https://solarsystem.nasa.gov/news/1421/arecibo-observatory-returns-from-tropical-storm-isaias-lockdown-to-track-asteroid-for-nasa/




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