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Horizion BBC2 Tuesday 3rd March


baggywrinkle

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Worth watching, it gives a insight to aspects often not appreciated. Basically how planets move orbits. Interesting to consider the possible (probable) movements of Jupiter. No one mentioned if we formed one place and if our orbit changed - I was thinking that it could explain the water we have however it never came into the discussion.

Means that our little system could be immensly rare, and it therefore covers the finding of so many hot Jupiters as exo-planets.

Looks like we are one planet down - read this a few years back - Saturn+Jupiter bullied something about Neptune size out around 4Bn years back. Liked the way they described Mars as the runt of the litter. :grin: :grin:

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I recorded it. Not worth watching?

Dave,

Watch it! There`s quite a lot of guesswork going on but it makes you think and there is logic behind it. I didn`t think that it would state `this is what definitely took place`. But at the end I was starting to think - are we indeed alone???

OK everyone start the battle of words again if you want - after all this is partly what the forum is for.

Regards

Dave

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Well it was better than most Horizons, not that that's saying much. Would have liked more celestial mechanics and less ice skating, but I guess that's all the media typs who produce this stuff understand.

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Well to me it was all guess work, and how to ice skate, nothing to say this is how it was....

Yes it is guess work at this point as its quite a new concept. For so long the classical view of a static formation of the solar system has held firm as our best theory. However the fairly recent and still ongoing discovery of so many hot jupiters is relegating this theory to the realms of "very unlikely" so other options are being aired. At the moment they are young ideas with a lot of guesswork, but no doubt as time goes on evidence for such theories will be uncovered and the theory shaped.

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Agree with DaveS, better than some Horizons of late.

Immanuel Velikovsky must be grinning ear-to-ear in his grave, in the 1950s he proposed similar stuff in his book (and other places) "Worlds in Collision"

[Actually I thought I remembered "When Worlds Collide" but a quick Google and a Wiki informs me otherwise.]

He, of course, was vilified at the time for such outrageous "un-scientific" ideas ! :)

3-body problems are bad enough in maths, dont fancy trying to predict a 4-body ( or 5 if we include the missing one ) !!

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Lots of art shots of people wondering around and voiceover saying 'what we might discover is.....' and 'scientists want to find out...'.

Not enough information to cover the glossy photography.

Looks like a producer sold the idea to enable some foreign travel!

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