Previous research has predicted there might be 100,000 times more rogue planets in the Milky Way than stars.
Read more: http://www.universetoday.com/104210/rogue-planets-could-form-on-their-own-in-interstellar-space/#ixzz2nxcPwnsI On Thu, Dec 19, 2013 at 4:59 PM, ChemE Stewart <[email protected]> wrote: > 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]>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 >>> >> >>
