can anybody tell me exact scale of the space?

Question

I am interested in that, "what is a black matter in the space?".

Answer 1

The scale is approximately 1:1.

Answer 2

The scale is too big to really understand. The inner planets are many millions of miles away. The outer planets are billions of miles away. The stars are so far away that miles are just too small. The nearest star is trillions of miles away, so we use light years instead. One light year is 6 trillion miles and the nearest star is a little over 4 light years away. The nearest galaxy is a million light years away, but there are other galaxies billions of light years away.

The "dark matter" that you hear reported in the news so much is just unknown. It is in the news because it makes a good story, and it makes a good story exactly because it is unknown. All we know for sure is that the stars in galaxies orbit in an odd way the seems to imply there is more matter in the galaxy than we can account for by seeing all the stars and dust clouds and gas clouds. The unknown matter is called dark matter for lack of a better name.