Hello, Nik, you wrote: F>>> Tumannost Andromedy, like, it is possible to see with open years, and it in the northern. DO>> it dim, near to cities the flare hinders. N> very good time that it to consider will be fast There is a judgement that is not very fast yet Proceeding from calculations, stars and gas of a galaxy of Andromeda will be visible with open years approximately through three billion years N> through 400 million years we strongly we approach, and through 500 - we face. It will be amusing, I prepare . Somewhere the zero was lost: Collision of the Milky Way and a galaxy of Andromedy (M31), two largest galaxies in Local group as assume, happens approximately through four billion years.... As a result of collision of a galaxy during approximately one-two billions years merge in one large galaxy.