Super Giant Star: When I was a young star, younger than all of you, just about after was born. I was a small star, didn't have any idea of what was going on. I had a very surprisingly strong gravitational pull, pulling all sorts of gases. Having stronger gravity pulled more and more gas and dust to me. The inner layers of gas and dust start to warm from the pressure of the gas and dust above. Now the star's heat and light blows away the surrounding gas and dust, and then I could finally be seen in the nebula. What's the nebula? Well, it's kind of a cloud of gas and dust in outer space. When all you young stars get bigger, you will be just as big and bright as me!
Moon: Okay, when you come to visit me, you will be quite surprised with all my wonderful features! Yes, I may be small compared to planets, but I can be just as cool as them! I do have gravity, just not a lot. Compared to your home, Earth, I have about a sixth Earth's gravity. So when you walk, it will feel weird but it is so much fun! It's like you are on a giant trampoline! My surface is covered in thousands of craters, some big and some small. They are fun to explore. When you come you will see footsteps, those are all from people who have …show more content…
For I have noticed that we all have begun to grow apart, slowly edging away from each other. I am also afraid that by the time you get my letter, It may be too late. As you know, the galactic post office takes 1,000,000 years to deliver to distant galaxies. And since you all are getting further away, I am sorry if the letter does not reach you in time. The universe is changing. In fact, galaxies are moving apart at an ever increasing rate. The gravitational attraction between two galaxies at that distance is too small to have a significant effect, so the galaxies more or less follow the general flow of the expansion. I hope the best from all of
Moon: Okay, when you come to visit me, you will be quite surprised with all my wonderful features! Yes, I may be small compared to planets, but I can be just as cool as them! I do have gravity, just not a lot. Compared to your home, Earth, I have about a sixth Earth's gravity. So when you walk, it will feel weird but it is so much fun! It's like you are on a giant trampoline! My surface is covered in thousands of craters, some big and some small. They are fun to explore. When you come you will see footsteps, those are all from people who have …show more content…
For I have noticed that we all have begun to grow apart, slowly edging away from each other. I am also afraid that by the time you get my letter, It may be too late. As you know, the galactic post office takes 1,000,000 years to deliver to distant galaxies. And since you all are getting further away, I am sorry if the letter does not reach you in time. The universe is changing. In fact, galaxies are moving apart at an ever increasing rate. The gravitational attraction between two galaxies at that distance is too small to have a significant effect, so the galaxies more or less follow the general flow of the expansion. I hope the best from all of