To give you an example, if you look up at the night sky and see a star in the sky, chances are that you have been looking at a planet. And that planet belongs to a star system that is 1.5 billion light-years away and is 6.9 billion years old. You can think of this star system as the original solar system, which formed the Sun, the Earth, and the rest of the planets 4.5 billion years ago. Because of this long time span, the star system has evolved and changed over time, and sometimes, all of the planets have changed. So if you want to explore the solar system and want to know deeply you can buy a professional telescope for sale and try it on your own to explore and learn. If you find any queries then you can ask anything from Astronomy Telescopes we are here to help you out.