Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Trevor Wilson Newsgroups: sci.physics Subject: Re: What's the Bigger Menace, an Asteroid Impact or Climate Change? Date: Tue, 15 May 2018 09:32:12 +1000 Lines: 75 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net VulzNkq9DI9i+2UNC5RwyQsvRpMzsRRK+NEpmZrIzd6H5iL2Y/ Cancel-Lock: sha1:S3WzwJa7jpFmWbV7HCVBuRg2UR8= User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 In-Reply-To: Content-Language: en-US X-Antivirus: Avast (VPS 180514-4, 15/05/2018), Outbound message X-Antivirus-Status: Clean Xref: csiph.com sci.physics:685467 On 15/05/2018 9:03 AM, benj wrote: > On 5/14/2018 4:27 PM, Sergio wrote: >> On 5/14/2018 3:09 PM, Trevor Wilson wrote: >>> On 14/05/2018 3:54 AM, Sergio wrote: >>>> obviously Asteroids!! >>>> >>>> https://www.scientificamerican.com/article/asteroid-impact-climate-change/ >>>> >>>> >>>> >>>> >>>> Nevertheless, they wrote, "The asteroid-threat community has been much >>>> more successful than the climate change community in characterizing the >>>> dominant worst-case scenarios and communicating them to policymakers, >>>> the media and the public—even though the climate change threat is more >>>> than a thousand times greater…, [therefore] quantitative comparison of >>>> climate change to asteroid impact is a valuable way to put both threats >>>> into perspective." >>>> >>> >>> **Walk, chew gum. Humans can do both. Certainly NASA and the other >>> agencies must continue to identify objects that may endanger the planet. >>> We must also deal with the reality of global warming. >>> >> >> yep, they are two different problems. >> >> The asteroid one, >>     detection decreases as size decreases or as distance increases. >>     probably cannot do anything if below a certain size, the atmosphere >> will burn out most below about 4 inches in diameter >> >>     what to do if the thing is 100 foot across or greater ? >> >>     NASA cannot predict where something will land on Earth due to >> atmosphere unless it is Really big, like a few miles big >> >> so, I have not seen anything real that could prevent or change course of >> an asteroid in any size range. >> >> with Laser, they cannot focus energy on target long enough. >> >> so What will NASA do, they dont really talk about destroying asteroid, >> but they will talk about detection of them, map them. >> >> so if detected, now, there is nothing we can do, and it most likely >> cannot predict where it will hit on earth with any accuracy. >> >> problem is getting enough mass up there in time near asteroid to do >> something. >> >> >> Physics problem; >> >> take a 1,000 foot diameter, iron, coming in at 20,000 mph detected at >> 10,000,000 mi out.  How much time does earth have to get something there >> in time to effect a path change ?  How much mass is required to launch ? >> >> (make assumptions where needed, and bound problem where you can) > > Foolish question, Sergio. Libs can't do science. (even though Trevor > pretends to know science, watch he won't answer this because he can't > Google it and pretend he did it himself. > **No, you dumb lap-dog. Trevor won't answer it for several reasons: * I don't deal in Imperial measurements. No one on this planet does (except for a pitiful 5% of the planet's population). The Metric system is the only language scientists deal with. * The Question is irrelevant to the discussion. -- Trevor Wilson www.rageaudio.com.au