An asteroid

There once was an egg that appeared 500,000,000 miles away from the end of the milky way. In an asteroid and there was nothing except for the warmth of a star and a layer of oxygen only enough to support few animals. There could only be 360 animals if they were to live six months. So this animal can only survive 180 years and this species lives 1,234 years average 180 years is not a lot to them. So one month later it hatched. It wanted to lay more eggs but he needed more oxygen. He looked around and fused things which ended up as a small seed he couldn't plant it very well it grew s l o w l y so s l o w that it fully grew and cleaned oxygen when his 336th  baby hatched nearly 5 months ago but it produced and cleaned enough that they could live 10 more years but since then there was more air so the next plant grew faster almost half as slow as the first and many more grew and they all survived then the next plants grew 5 times faster than the second generation then 16 times an then 45 times than 187 times and then 453 times faster until it grew as fast as you can say a knock knock joke. Then he needed space it was now super dense and heavy then the star warmth became a black hole warmth and tried to suck it in but then all the objects caused it to resist it. Then everything else that was going to be pulled in missed and landed on the asteroid causing them to fuse soon it was big the oxygen split around the asteroids and junk. Then plants grew and then there were new animals soon the oxygen amount rose up and then it was like a great planet that is similar to earth.