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Chipper Q
Chipper Q
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Recalling what I mentioned

Recalling what I mentioned about NEOs, how 'bout this?


From: Mile-wide asteroid passing by Earth

The minimum distance from Earth is ~2 million miles, no chance of collision, which is good... If this one had been on a collision course, would we have noticed in time to do anything about it? Would we be able to get something to it in time to change its course enough to miss the Earth? What would it take to divert an asteroid that size?

Rod
Rod
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RE: Recalling what I

Message 61467 in response to message 61466

Quote:

Recalling what I mentioned about NEOs, how 'bout this?

The minimum distance from Earth is ~2 million miles, no chance of collision, which is good... If this one had been on a collision course, would we have noticed in time to do anything about it? Would we be able to get something to it in time to change its course enough to miss the Earth? What would it take to divert an asteroid that size?

Presently, don't rely 'only' on governments to detect NEO's. They are to much short term thinkers and don't have enough resources. They will react once it is detected. If object is detected in time. I think it will require little force to steer it from colision. I think our solution to this problem is a lot of volunteer eyes turned skyward.

The Association of Lunar and Planetary Observers APLO (Which I am a proud member :-)) is excellent way for people to get involved. It does not take much equipment or skill to start. Minor Planet Section illustrates just how much fun and useful it can be. :-)

There are some who can live without wild things and some who cannot. - Aldo Leopold

Rod
Rod
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Sorry I have to take

Sorry I have to take something back. The US Congress acted on the problem in December 2005, NASA plans (ed) to set up a workshop on the problem calling for abstracts on papers by May 2006.

Call for Papers

It seems that I can't find any findings on the results of this workshop It was held in Jul 2006 Workshop .

Here is NASA's NEO Webpage NEO
It does not seem to mention any mitigation possibilites.

Well at least the powers to be are attempting to determine extent of the issue :-)

Wow! I consider Asteroid 2006 VV2 a closey :-)

There are some who can live without wild things and some who cannot. - Aldo Leopold

Rod
Rod
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Asteroid VV2 was discovered

Asteroid VV2 was discovered on November 11 2006 by Linear

It was less than one year ago. Forgive me I have been thinking we should have a program in place using satellite, ground based radar and computer assisted telescopes, and also an inspired group of volunteers. The goal detect NEO's whose diameter is 0.5 Km or greater and to predict its trajectory 10 years out. I think this will give enough time to mount a mission to steer this object from any possible collision with earth.

I think the technology is available to do this.

The next one. Asteroid 2007 El88 discovered March 14 2007 by the Siding Spring Survey Size- 470m 1.0 Km. Miss Lunar distances 27.2. Closest approach April 09 2007. That is not enough time from initial detection and closest approach
This definitely a problem.

There are some who can live without wild things and some who cannot. - Aldo Leopold

Chipper Q
Chipper Q
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RE: It was less than one

Quote:

It was less than one year ago. Forgive me I have been thinking we should have a program in place using satellite, ground based radar and computer assisted telescopes, and also an inspired group of volunteers. The goal detect NEO's whose diameter is 0.5 Km or greater and to predict its trajectory 10 years out. I think this will give enough time to mount a mission to steer this object from any possible collision with earth.

I think the technology is available to do this.


IIRC, one way is to slingshot a satellite around it (while it's far enough away where that would make a difference in its trajectory)... but what about something a mile wide? Impacting something into it wouldn't really solve the problem, would it? Could you vaporize something that large? Is landing multiple rocket engines (and enough fuel) to push it off a collision course, a realistic solution?

Thanks, Rod, for all the excellent links!, BTW :)

Rod
Rod
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RE: IIRC, one way is to

Message 61471 in response to message 61470

Quote:

IIRC, one way is to slingshot a satellite around it (while it's far enough away where that would make a difference in its trajectory)... but what about something a mile wide? Impacting something into it wouldn't really solve the problem, would it? Could you vaporize something that large? Is landing multiple rocket engines (and enough fuel) to push it off a collision course, a realistic solution?

I think presently we don't have enough information on NEO's to determine a way to deflect them. My estimates on how far out you need to look was grossly underestimated (10 Years) . Senate Minutes

Quote:
It is estimated that a 30-year advance warning would be required to have a reasonable assurance of deflecting a NEO from a collision with Earth. Thus, if a future impactor were identified today, the time to explore the characteristics of the NEO, develop a deflection system, deliver it to the NEO, and apply the deflection early enough to prevent an impact, requires about a 3-decade lead time.

Coming up with a generic system to deflect a comman NEO I believe is the wrong. approach. First we must catalog these little buggers. Send misions to determine their make up. For instance a comet's make up is a lot different then a asteroid. Using a wrong deflection systen could just break it up causing a worst problem. A deflection solution would have to be tailored made for the particular NEO. The minutes mentioned using specialized nuclear charges with a slow impulse to prevent a breakup (Like a shaped charge). This technology would have to be developed. Today using chemical rockets for an object greater than 1Km would be futile. I don't think we could get enough lead time.

Further I don't think we should wait for an NEO to possibibly impact the planet to test this technology. I think we could take some exsisting samples out there, and 'test' our ability to deflect an object. No point in putting all our eggs in one basket:-). It is not a question of 'If' it is 'when'

There are some who can live without wild things and some who cannot. - Aldo Leopold

Rod
Rod
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The problems with some

The problems with some corporatations is What the say and what they do are two different things.

Is this exsample of Walmart Green-wash??

Disinformation

Anyway I do not do much shopping at Walmart :-)

There are some who can live without wild things and some who cannot. - Aldo Leopold

Red Atomic
Red Atomic
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RE: The problems with some

Message 61473 in response to message 61472

Quote:

The problems with some corporatations is What the say and what they do are two different things.

Is this exsample of Walmart Green-wash??

Disinformation

Anyway I do not do much shopping at Walmart :-)


Typical Business. Do anything to get customers in the door. They know that if they do get you in the door, you will be much more likely to come back again and again.
This type of Marketing will only change when shoppers wise up to these tactics and refuse to be fooled.


Red Atomic
The older I get, the better I was.

Rod
Rod
Joined: 3 Jan 06
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Credit: 811266
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RE: RE: The problems with

Message 61474 in response to message 61473

Quote:
Quote:

The problems with some corporatations is What the say and what they do are two different things.

Is this exsample of Walmart Green-wash??

Disinformation

Anyway I do not do much shopping at Walmart :-)


Typical Business. Do anything to get customers in the door. They know that if they do get you in the door, you will be much more likely to come back again and again.
This type of Marketing will only change when shoppers wise up to these tactics and refuse to be fooled.

I argee. The problem is and I will give credit to Walmart as they have an extremely efficient logistics system and do offer the lowest possible prices.
That means alot when you are a family living from paycheck to paycheck.

The idea is to convince them to modify this extremely efficient logisitic system and provide more healthy food alternatives; which probably has a less stale date then Cheese Whiz (which is probably a 'eon)':-)

They are a family run business and so the public has very little control on investing in the company based on its social responsibilty index.
So like you said it is up to the family shopper.

I believe Walmart made this annoucement to attract a more upscale customer so thay can improve their bottom line and continue growing. It won't work unless they deliver on the products that they advertise. They will stop growing and shrink like Kmart or go extinct.

I have to take something back. Each month I drive my elderly mom to Walmart and other stores . She does not buy food or clothes there but she likes the store and it prices.:-)

There are some who can live without wild things and some who cannot. - Aldo Leopold

Chipper Q
Chipper Q
Joined: 20 Feb 05
Posts: 1540
Credit: 708571
RAC: 0

RE: RE: RE: The

Message 61475 in response to message 61474

Quote:
Quote:
Quote:

The problems with some corporatations is What the say and what they do are two different things.

Is this exsample of Walmart Green-wash??

Disinformation

Anyway I do not do much shopping at Walmart :-)


Typical Business. Do anything to get customers in the door. They know that if they do get you in the door, you will be much more likely to come back again and again.
This type of Marketing will only change when shoppers wise up to these tactics and refuse to be fooled.

I argee. The problem is and I will give credit to Walmart as they have an extremely efficient logistics system and do offer the lowest possible prices.
That means alot when you are a family living from paycheck to paycheck.

The idea is to convince them to modify this extremely efficient logisitic system and provide more healthy food alternatives; which probably has a less stale date then Cheese Whiz (which is probably a 'eon)':-)

They are a family run business and so the public has very little control on investing in the company based on its social responsibilty index.
So like you said it is up to the family shopper.

I believe Walmart made this annoucement to attract a more upscale customer so thay can improve their bottom line and continue growing. It won't work unless they deliver on the products that they advertise. They will stop growing and shrink like Kmart or go extinct.

I have to take something back. Each month I drive my elderly mom to Walmart and other stores . She does not buy food or clothes there but she likes the store and it prices.:-)


I remember as a child being impressed by the huge Sears and Roebuck catalog, and I imagined what the future would be like. Now that the future's here, what I imagined is no where in sight... but there is another new dog and pony show... and so what's better about the future of economics? Round and round the consumer goes, and where it stops, no one knows :) I think that as long as there is a 'sucker born every minute', economics will provide the lawful means to keep picking pockets... I don't think I've ever felt like a bigger sucker, but I'd still rather spend my free time marveling at science than shopping around, any day...

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