Well the thing to remeber about aliens is that they will have to endure many of the plantary problems and regional space problems that humans will have to endure, such as magnetic pole reversals, magnetic pole reversals are based on the rotational speed of a planet, and the density caused by gravity of hydrogen and helium that generate magnetic feild of planets(gas density of the planets core). the rotational speed of planets increase or has a higher rate of magnetic pole reversal the farther it is from the galaxtic center, or center of the spiral galaxtic arm, this means that planets closer in to the gravity centers have a more stable magnetic feild and less frequent plantary destruction, or planet destrubance by pole reversals and therefor have longer periods to develope organize life,Intelligence. the magnetic feild plays a crucial role in biological life no matter where it is in the galaxy, meaing that planets that posses intelligent life also have a magnetic feild. the influence of the magnetic feild determines the rate of intelligence, a faster motion of a magnetic pole will result in a higher rate of intelligence, square to this or equally inportant to this is the strength of the magnetic feild, which determins the rate of effect or influence that a magnetic feild has on the devloping intelligence of the life form on a planet.
planets in the gravity centers of the galaxy such as the sprial arm of our galaxy have greater quanities of hydrogen and helium, as well the have grater gravity complexity, this means that such a planet would have a stronger magnetic feild, with a slower motion of the magnetic poles, the earth would have a weak magnetic feild but a fast moveing feild. in each event regardless the rate of intelligence will increase before the occurance of a magnetic feild reversal, and at the time of magnetic feild reversal the life forms that inhabit the planet will exsperince the destruction of the developed civilzation by the same force that created it, the magntic feild.
understnding the role that the magnetic feild plays in the devlopment of intellegence, each planet in the galaxy that harbors life has a set time to develope, for aliens closer in to the center of the galaxy and its sprial arms the time of devlopment allowed by the natrual force of the magnetic feild is much longer, and effective, than that for earth of the outter planets of the galaxy that harbor life. for earth the poles reverse every say 5,000 to 7,000 ,or 10,000 years, inner planets could have twice as long.
regardless they like us must exsperince the magnetic pole reversal which as well threatens all life on their planet, if they do not gain the intelligence to determine before hand the event of magnetic pole reversal they will meet the destruction by the reversal and fail to make it to becoming space traveling aliens, to meet us. any alien to arrive and meet us will come from a civilization that has gained the intelligence to conqure a planetary event that is destructive, this with in itself tells us that they would be more advance that current mainstream earth people as we do not have the ablity to safe guard the earths population from such a destructive natural event.
in addtion to the event of magnetic pole reversal that occurs on every planet harboring life as all life is dependant of a magnetic feild for development, aliens would also exsperince the galaxtic changes of the various suns that form local groups of stars, and determine the chemistry and atomic stablity of different regions of the galaxy, making the destinct signture of life for their region. for earth life has been relative to our current chemistry for 27,000 years and there are about 9,000 years left of that chemical and atomic stablity of or region of the galaxy, given are solar systems speed of travel through are local group of stars, this means that in general the total span of human exsitance is equal to about 36,000 years, at which time the chemistry that makes humans possible in the galaxy will no longer exist. given this humans will have to master not only the magntic pole reversal but also the change in chemistry and atomic stablity, meaing that humans will have to find a suitable enviroment artifical of another planet ect.... to continue the humans race as a species. like wise a alien race in another part of the galaxy will have to learn to do the same.
Because local groups of stars are more closer togeather in the gravity centers such as the spiral arms there is a greater chemical stabltiy in those regions. This defines that in addtion to a more stable magnetic feild giving longer times before magnetic reversal alien planets closer to gravity centers also have stable chemistry and atomic stabity.
for us we got about 36,000 years, they have about 500,000 years of chemical and atomic stablity, that difference in chemical stabltiy gives them a greater chance of survial in a magntic pole reversal, with less biological adaption to make during the change increasing the chance of developed intelligence even furthur, it is with out doubt that intelligent alien life exist, and will come from the inner regions of the galaxys sprial arms.
the simple fact of chemical change due to aligenment of local star groups and various sun traveling through the galaxy makes it clear that aliens will travel in order to gain that stabity of chemistry, meain they will look to find regions of space that will harbor their chemistry making life for them possible. this fact of chemical stablity will compel them to travel the galaxy resulting in the discover of other life forms. because we can give a estaimat of 500,000 years before a chemical chnage for inner planets and solar systems, we can make a determination on when contact will or when or is going to happen, simply count back 500,000 years from to day, in our region that would have been say 13 times of chemical changes at our speed of travel through the galaxy, this means that from there beiing they are some 450,000 time older than us, (minimum). aliens had only say 15,000 years to make contact will a complexted life form on earth, this produces a high probality in reality that aliens could make contact, at anytime.
But due to chemical changes as we are located on the very outter edge of the galaxy this would be a remote satilte, or exploring vessal. at any rate the aliens envoled would be galaxtic traveling and with the abltiy to travel such, regions such as ours could only be worth visting for the contract and development of a space craft for traveling the cosmos, such as to another galaxy like Adromeda. here we offer the gravity completixty for a base in the far reaches of the galaxy.
Dwyane D.L.Rabon