BBC2’s Horizon

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    Posted by Paul A Brierley at 06:54 on 2011 Aug 16

    Did any of you catch last night’s Horizon documentary about Telescope’s of the 21st Century?Apart from the usual annoying music in the background. I thought it was pretty good. There were some very interesting telescope’s, including a Neutrino detector under the ocean (I thought these particles had already been detected) and a cosmic ray detector. And, ALMA. ALMA looks very impressive. And when operational, will hopefully answer many question’s.It was nice to watch some good telly for a change.


    Posted by Gary Poyner at 09:54 on 2011 Aug 16

    At least Brian Cox wasn’t involved. Thank goodness for small mercies!Gary


    Posted by Roy Hughes at 10:09 on 2011 Aug 16

    I was curious about the ship laying the nutrino detector the "Pourquoi pas?" … the "Why not?".Roy


    Posted by Callum Potter at 12:13 on 2011 Aug 16

    Yes, I thought it was a good programme too…There is still a lot of work to be done on neutrino detectors. Neutrinos from the Sun were detected in the 1980’s i think, but these detectors are searching for cosmic neutrinos, which are a lot harder to differentiate. They are also trying to work out the direction they are coming from, to try and locate sources.I beleive they have detected neutrinos from supernova 1987A (the Rob McNaught one, in the LMC) – but no others (with any statistical significance).Callum


    Posted by Paul A Brierley at 17:30 on 2011 Aug 16

    Dear Callum,That explains it. I did know about the detection of neutrinos following the explosion, of SN 1987A.How ever. I didn’t realise that know other’s had been observed since that time.


    Posted by D Gray at 20:42 on 2011 Aug 16

    Did anyone notice the comment re. Centaurus A as being our nearest galactic neighbour – or did I mis-hear?! Some careless editing I suspect – our nearest galactic radio galaxy/ies I believe?


    Posted by Callum Potter at 16:15 on 2011 Aug 18

    Yes David, i noticed that too – wasn’t sure if i misheard or not either at the time.Callum

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