Double yes. Best get our DNA spread far and wide as soon as possible On Thursday, December 19, 2013, Axil Axil wrote:
> yes > > > On Thu, Dec 19, 2013 at 4:48 PM, David Roberson > <[email protected]<javascript:_e({}, 'cvml', '[email protected]');> > > wrote: > >> I have been enjoying the* Planets* simulation on my Linux system and >> noticed something that gave me a bit of concern. Perhaps some of my >> fellow vorts have information concerning the issue that I am about to >> mention which sheds light upon the real danger. >> >> When I play with a system that contains a large multitude of planet like >> objects generated randomly within a small region of space I see that in >> every case many of the objects are ejected from the region at a high rate >> of speed into open space. I am not too confident that the program does a >> great simulation of the real process since it operates in 2 dimensions only >> while the real systems use 3. >> >> My concern is that this process would typically send a large number of >> dangerous mass objects into the region between stars and as a consequence >> some in our direction. The ones that cross our orbit could lead to a >> catastrophe if they were to collide with the earth. The objects that do >> not collide would likely continue on their paths through space and out the >> other side of our solar system. >> >> Is there reason to consider this situation as dangerous and is there >> evidence that this has happened before? Today, most of the comets and >> asteroids are considered in orbit around our sun, but is that the only >> condition? >> >> How close to earth would an asteroid need to pass before it is detected >> by our systems? And, if the size were large enough to cause an extinction >> level event, would we see it before it was too late? >> >> It is fairly well established that the history of earth has included many >> extinction events and they have generally been assumed to be from objects >> in orbit around the sun. Does anyone know of any proof that none from way >> out there has impacted us? >> >> I recall reading about a period of earth's history where a large quantity >> of collisions came after the earth was similar to today. This happened >> when the earth was millions if not a billion years old and since the sun >> was formed along with numerous brothers, perhaps some of the ejections from >> it's twins caused the event. The delay would have give them enough time to >> reach us from adjacent star systems if traveling at a high velocity. >> >> Do we have reason to worry? >> >> Dave >> > >
