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  #271  
Old 24 Aug 17, 18:58
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I would think breaking up would be more devastating regarding extinctions world wide
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  #272  
Old 24 Aug 17, 21:31
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Originally Posted by Moulin View Post
I would think breaking up would be more devastating regarding extinctions world wide
Actually, likely to be less, but there are those variables.

A single mass broken into several smaller will usually offer mopre surface area upon atmospheric entry to result in a greater mass reduction.

Destruction in general is a basic equation of mass times velocity(near constant for any sized object due to Earth's gravity well) equals impact results. Reducing a large single mass into many smaller ones will usually increase the total surface area subject to abolation~atmospheric resistence=heat burn off and in essense usually mean a smaller mass impacting.

However, spreading one LARGE impact into say a Dozen smaller impacts could result in a larger scale of destruction, especially from a human perspective/effects, but here the veriable is in the where and when. If mostly upon ocean could likely be "small scale", but if upon the right locations of hard land, say cities/urban areas could be very devestating.

Net "bottom-line", not something to roll dice on if avoidable.
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  #273  
Old 25 Nov 17, 01:43
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At about three mile size, this could be a killer, but at about two million mile distance, hardly "grazing" i'd say;
https://www.dailystar.co.uk/news/lat...as-december-17
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  #274  
Old 02 Dec 17, 15:53
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Originally Posted by G David Bock View Post
However, spreading one LARGE impact into say a Dozen smaller impacts could result in a larger scale of destruction, especially from a human perspective/effects, but here the veriable is in the where and when.
Think MIRV (multiple independent reentry vehicles) used for nukes...
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  #275  
Old 04 Dec 17, 17:08
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Originally Posted by Pirate-Drakk View Post
Think MIRV (multiple independent reentry vehicles) used for nukes...
The thing about MIRVs is that the concept was that say six smaller devices each targeted to a specific ICBM silo were more likely to take out all to most whereas a single BIG one would have a smaller area of blast effect and only take out a few at best. Also, in large, sprawled "urban" areas you could damage the human structures over a larger square mile surface than with a single big one. The concept was also a way to get more "BANG" with fewer launch vehicles used.

In the case of asteroid impact, I'm reminded of an "experiment" I did several years ago using one of my 12 guage shotguns. We were out in the "boonies" at a place were many people in the county would go to shoot and someone prior had left one of those old tub style washing machines out there. I found an aera where the surface had been shot at and then conducted my test;

First I fired a round of birdshot, #7 or 8 IIRC, about three dozen pellets the size of a BB, and noticed a lot of dippled impressions in an area of about 3-4 inches diameter, but no penetrations.

Next I fired a round of buckshot (00), about nine pellets the size of a 9mm pistol round. They had a smaller area of impact, but did penetrate through the first wall, but not the second.

Next I fired a slug(solid) round. It made a 1-2 inch entry hole and slightly smaller exit hole on the other side wall.

In asteriod impact terms;

A 2-3 mile rock will create a smaller sized area of impact, but the deeper penetration and concentration of energy is such that the secondary effects, seismic disruptions and/or tsunamies could have near global reach and effect.(slug shot)

A 2-3 mile sized rock, broken into several or more pieces will produce a larger sized area of multiple impacts, but the total scope of energy and damged will be lessor than of the original solid object. (buckshot)

A 2-3 mile sized rock broken into dozens of smaller rocks will have an even larger area of surface impact, but the reduced penetration and energy will yield the lowest net damage effect, especially on a planet wide scale. (birdshot)

I probably should do a youtube of this.
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  #276  
Old 08 Dec 17, 21:21
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Ooohps

Asteroid that could’ve obliterated NYC skimmed past Earth – and NASA didn’t notice

A MASSIVE asteroid that could have destroyed New York City skimmed past Earth – and NASA had no clue.
...
The large space rock – dubbed 2017 VL2 – passed the planet on November 9 at an astonishing distance of just 73,000 miles, which is considered tiny in space terms.
Space boffins think that if the rock measuring between 16 and 32 metres had hit, it could’ve wiped a major city such as New York off the map.
The rock belongs to the Apollo group of asteroids and was first seen at ATLAS-MLO observatory in Hawaii a day later.
It was travelling at a speed of 8.73km/s and would have caused catastrophic damage if it had made impact.
...
https://www.dailystar.co.uk/news/lat...-new-york-city
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  #277  
Old 12 Dec 17, 15:42
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Presented more for the images it has than than the title, FYI~FWIW;
Has an alien probe entered our solar system? Cigar-shaped interstellar 'comet' Oumuamua is being investigated for signs of extraterrestrial technology

  • Astronomers are set to scan an 'alien' comet for signs of extraterrestrial signals
  • The cigar-shaped object, named 'Oumuamua, sailed past Earth last month
  • The mysterious comet is the first interstellar object seen in the solar system
  • Now a team of alien-hunting scientists led by Russian billionaire Yuri Milner is scanning the object for radio signals
By Harry Pettit For Mailonline
Published: 12:20 EST, 11 December 2017 | Updated: 06:33 EST, 12 December 2017
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Last edited by G David Bock; 12 Dec 17 at 19:06..
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  #278  
Old 12 Dec 17, 16:29
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Originally Posted by G David Bock View Post
Presented more for the images it has than than the title, FYI~FWIW;
Has an alien probe entered our solar system? Cigar-shaped interstellar 'comet' Oumuamua is being investigated for signs of extraterrestrial technology

  • Astronomers are set to scan an 'alien' comet for signs of extraterrestrial signals
  • The cigar-shaped object, named 'Oumuamua, sailed past Earth last month
  • The mysterious comet is the first interstellar object seen in the solar system
  • Now a team of alien-hunting scientists led by Russian billionaire Yuri Milner is scanning the object for radio signals
By Harry Pettit For Mailonline
Published: 12:20 EST, 11 December 2017 | Updated: 06:33 EST, 12 December 2017


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