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Everything you need to know: Comet ISON in 2013

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posted on Sep, 18 2013 @ 03:21 PM
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reply to post by ngchunter
 

Thank you.
Why I asked you this specific question was I read about gravity assist effect the other day and it crossed my mind whether its applicable to comets.




posted on Sep, 18 2013 @ 03:23 PM
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reply to post by ngchunter
 


Thanks for this reply. I just incorrectly told a friend that it may be possible ISON could break up and slow down and hit earth with pretty large pieces.

My estimations were unfounded. I appreciate being corrected.



posted on Sep, 18 2013 @ 03:26 PM
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zilebeliveunknown
reply to post by cody599
 

What is new here with Ison we didn't know before?


You may have known, I didn't


Thanks for the info OP.



posted on Sep, 18 2013 @ 03:54 PM
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zilebeliveunknown
reply to post by ngchunter
 

Thank you.
Why I asked you this specific question was I read about gravity assist effect the other day and it crossed my mind whether its applicable to comets.


Despite what you may have seen in the movie Star Trek IV, gravity "slingshots" or "gravity assists" within the solar system cannot be done using the sun (more or less). Since all the planets are orbiting the sun (really the solar system barycenter hence the words "more or less") you can't really do a gravity assist with the sun, only with the planets. Sure, the sun can be used to change course, but you end up leaving the sun with the same velocity relative to the sun you arrived at sans any maneuvering you do on your own (also sans any perturbations from planets). The same is not true of a hypothetical gravity assist using a planet. A planet has momentum relative to the sun (a LOT of it) and you can effectively steal a tiny piece of that momentum during a flyby and use it to increase your own orbital velocity.
www2.jpl.nasa.gov...
I rather like their train analogy. Imagine the sun is a bystander sitting at a train station and the planet is a train coming towards the station at a 100mph. A ball is thrown towards an oncoming train. The ball is thrown at 30mph, but the train is traveling towards the stationary sun at 100 mph. The stationary sun sees the ball initially traveling 30mph relative to it. It hits the train. The train saw the ball coming towards at a net velocity of 130mph - the velocity of the ball + the train. The collision is perfectly elastic, so from the train's perspective the ball bounces away from the train and is still going 130mph, the same velocity it had on approach. From the sun's perspective though the ball has just been accelerated by 100 mph. Where did that energy come from? It came from the train's momentum. Of course the train has a lot of momentum so you don't see the train detectably slow, but that's where the energy came from. If you bounced the ball off the stationary sun instead it wouldn't change its velocity relative to the sun like it did with the train.



posted on Sep, 18 2013 @ 10:40 PM
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reply to post by cody599
 


Here is a very compelling video of a Chilean Astronomer(Carlos Muños Ferrada) who talked about Ison. Before Nasa & the Washington Post ever brought it to our attention.This was back in1939 & he called it planet/comet,it doesn't follows your regular celestial rules. As to many people are adamant of certain celestial laws.
He also predicted multple earthquakes within hours of devastation.

sinais2012.blogspot.com...

www.youtube.com...



posted on Sep, 19 2013 @ 12:40 AM
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reply to post by GraciaEspn
 


It wouldn't be possible to detect ISON in 1939.

It's not possible for a celestial body not to follow celestial mechanics. If such an object were found, it would be sensational news everywhere. But we haven't seen such an object.

Hercolobus and Nibiru are constantly-perpetrated myths and hoaxes that have no basis in real science.

You cannot reliably and consistently predict earthquakes, but in many places on Earth they happen so often that you could name a date, and there would be a good chance that an eq will happen on that date.

Lastly, lots of astronomers (including the amateurs) are tracking and studying ISON, and it's precisely where it's supposed to be. It looks like a comet, quacks like a comet, and follows the same celestial mechanics as the rest of Solar System bodies.

P.S. Extraordinary claims require extraordinary evidence. If that astronomer of yours discovered something remarkable or unusual, the right course of action would be to share his findings with the astronomy community so that they could be verified by other astronomers, and anounced officially. I could post a blog or paper claiming I spotted a previously unknown planet in the Solar System, but unless it's confirmed by other astronomers, my findings could be completely made-up, or caused by an error.
edit on 19-9-2013 by wildespace because: (no reason given)



posted on Sep, 19 2013 @ 05:33 AM
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Cheers for that. I'm sincerely hoping Ison puts on a good show, but I suspect it will be another damp squib.

But hey, not long to wait now until we find out.

I bet if it's impressive it just rains every night so we don't see it.






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