Talk:Asteroid impact avoidance

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Not that anyone will care, but[edit]

I came up with the solar sail proposal in 2004, and sent it to NASA. I never received a reply email, but I've seen this scenario posted at a couple of different discussion groups. I'm not sure if I should be pleased, or pissed that I was never credited with the original idea. I guess my small claim to fame, if it helps everyone, should be just that. A small claim. I just hope it works if they go to use it. -Tercero

solar sail was invented in 1924. Somehow I don't think the idea of using them to deflect asteroïds waited 2004 and you.--Musaran (talk) 19:54, 3 October 2009 (UTC)
 : Not to mention that the Solar Sail idea was proposed at the beginning of the 1998 movie Armageddon, where it was quickly rejected given the timeline of (iirc) 18 days. Zeldafreakx86 (talk) 21:29, 25 July 2014 (UTC)

graphic of deflection methods compared[edit] In their 2010 report Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies, the US National Research Council (NRC) identified four broad mitigation options and classified them by NEO impactor diameter and the warning time available before impact.

Original source Image by Tim Warchocki, Copyright © National Academy of Sciences from NRC report available at

Could someone good with that computer ink graphics maker copy the general message of the image and put it in this article? (talk) 13:20, 4 September 2014 (UTC)

ref name="defending Earth"[edit]

Hello, I am the IP editor that edited the above article a few days ago, I appreciate your attempt but your edit has now introduced a serious reference error.

Notable the referenced page(77) that you put in support of the following section of the article is incorrect, that page discusses how nuclear deflection works, it does not discuss politics. Could you please correct this?

" This bill "to provide for a Near-Earth Object Survey program to detect, track, catalogue, and characterize certain near-Earth asteroids and comets" was introduced in March 2005 by Rep. Dana Rohrabacher (R-CA)." (talk) 03:36, 6 September 2014 (UTC)

Hello. The reference was not introduced by me. What I noticed was that the exact same reference was introduced 3 times in the article so I only changed the format used for multiple citations of the same reference. I admit I did not read the reference nor check that it was used in the correct context. Please feel free to fix the errors you detect and make a note in the edit summary just before you save the page. Thank you, BatteryIncluded (talk) 01:23, 7 September 2014 (UTC)

Charon disambig?[edit]

Could someone more familiar with this subject matter take a look at this sentence?

For comets in the range of the then estimated 100 km diameter, [[Charon]] served as the potential example.

Can we confirm that this should be pointing to Charon (moon), or to something else?

Thanks KConWiki (talk) 14:10, 21 February 2015 (UTC)

Perhaps they were referring to comet/centaur 2060 Chiron? Charon is 1200 km and bound to Pluto. -- Kheider (talk) 15:13, 21 February 2015 (UTC)
I take it none of you actually went to the bother of just reading the reference that is attached? Planetary defense workshop LLNL 1995. Pg 258 and indeed pages before and after it clearly state it as ChAron. All this speculation that they were talking about ChIron is post-hoc without any contextual understanding of what was known about ChAron at the time of publication, moreover it is completely devoid of all adherence to the rules on WP:OR for you editors to have inserted ChIron on the grounds of your own personal speculation.
I have since reverted your post-hoc reasoning. Desist in adding speculation without first corroborating it with references.
Perhaps you could research and then write up the evolution of understanding about the nature and size of ChAron, specifically focusing on measurements prior to the year 1995, as a form of redemption, and report your findings in its article page. (talk) 03:53, 12 April 2015 (UTC)
There has never been a 'Charon type comet' as mentioned in the referenced article; there are Chiron type comets. The article has a typo. Here is a 1989 reference mentioning Pluto's moon Charon:
Chiron type comets:
Bkobres (talk) 20:15, 12 April 2015 (UTC)

Sufficient "megatonnage" to deflect asteroid exists?[edit]

According to a book in 1964. My understanding is that about that time nuclear warhead design yields became smaller so that they could fly on precision-guided ICBMs, rather than being dropped imprecisely from strategic bombers. Also a number of arms control pacts have been signed since. The statement is ambiguous and source is out of date. Whether an off-the-shelf warhead could do the trick is (and was) dubious. Geogene (talk) 18:31, 21 May 2015 (UTC)

It really does depend on how it's employed. A small-yield nuke used as a shaped charge might readily divert an asteroid from its course. (Something the writers of "ST:TNG", & you, have evidently not considered...) TREKphiler any time you're ready, Uhura 22:52, 21 May 2015 (UTC)
I am sure that if such situation develops, neither the Russians or Americans would complain or hesitate to use a nuke to save the planet,as it would not be a military mission but one of survival of the Homo species. BatteryIncluded (talk) 23:05, 21 May 2015 (UTC)
My concern was not political refusal to fly a nuclear mission, but the availability of megaton-range warheads and their mass. But I see that according to this (Figure 4) [1] an Icarus-sized asteroid could be deflected by a nondescript nuclear warhead if done >15 years before impact. Removing tag. Geogene (talk) 00:29, 22 May 2015 (UTC)