Source of impactors

[Rokcet Scientist]

EP's camp is getting more attention:



http://www.telegraph.co.uk/science/spac ... omets.html

I wonder how Nibiru plays in all this!

[Digit]

I saw this article some days ago and it triggered the usual response, usual for me that is.
I wonder when some one will actually prove the existance of the Oort Cloud?

Roy.

[E.P. Grondine]

Thanks RS, but I prefer Bill Napier and Victor Clube's hypothesis concerning comet injection from the Oort Cloud: that the gravitational perturbation of our solar system passing through the plane of our galaxy, the Milky Way, dislodges them and sends them inbound. Bill and Victor were the first to note the impacts of fragments of Comet Encke in the recent past.

The Nemesis hypothesis was developed by Walter Alvarez' s colleague Richard Muller, and later asdopted and supported by NASA's David Morrison, a pioneer impact researcher who worked with Eugene Shoemaker.

Rick Firestone has proposed that the explosions of nearby suprnovas has injected comets. Rick was the first to spot the new physical evidence of 10,900 BCE impacts.

(I wrote my book 2000-2005, in complete ignorance of Rick's work. Benny Peiser had sifted the Cambridge Conference eniterly over to AGW scepticism in January, 2004. I am of the opinion that neutrons are released in some large hypervelocity impacts, and this causes the data Rick Firestone first observed.)

For Bill Napier's analysis of the YD impacts, and his physical evidence tying them to the initial disintegration of Comet Encke, visit the Cosmic Tusk http://cosmictusk.com

By the way, President Obama was stunned by the unforeseen impact of a comet with Jupiter last year. Thanks to Obama and NASA Administrator Bolden, the NASA detection budget has risen from $4 million to $20 million our of NASA's budget of $17,000-18,000 million. Of course, you could add the cost of the WISE space infrared observatory to that number.

We're getting closer to having a handle on this hazard, but still have a way to go.

[E.P. Grondine]

I saw this article some days ago and it triggered the usual response, usual for me that is.
I wonder when some one will actually prove the existence of the Oort Cloud?

Roy.

Already done, Roy. The astronomers mapped out the orbits of observed Long Period Comets. They went back into the Oort Cloud.

When you look at really high quality wide field astronomical images, its like looking at sand on the beach. Now find the grain that will kill all mankind. Unless you find it on its way in, which is the easiest way to do it.

[Digit]

Thanks for the update EP, much obliged.

Roy.

[Rokcet Scientist]

Are all, or most cometary trajectories along our planetary system's plane? Or along our galaxy's plane? Or do they randomly come in from any direction at any angle to the planetary system's or galaxy's plane?

[E.P. Grondine]

Are all, or most cometary trajectories along our planetary system's plane? Or along our galaxy's plane? Or do they randomly come in from any direction at any angle to the planetary system's or galaxy's plane?

Well, RS, you have Long Period Comets and then you have Short Period Comets. The long period ones come in from the Oort Cloud, so if you look at the illustrations of the Oort Cloud that will give you some idea of the directions - pretty much random, with some nicks and bumps, as near as I know. The Short Period Comets generally are captured Long Period Comets and very very roughly run between Jupiter and the Sun.

I want to remind you that I've had a stroke, and orbital mechanics was never my specialty.
Impacts were. I hope I haven't made any goofs on this, but the best thing to do would be to look it up on wikipedia and check.

[Rokcet Scientist]

Thanks, EP. That makes it a little clearer. Meanwhile I found this image, which gives me a good enough impression of the theory. I can see that it would probably be extremely difficult to identify exactly where comets come from as they permanently ricochet and slingshot between the extant gravitational forces within the hypothesized Oort cloud system.