Chapters One and Two

Chapter One:
The book begins by talking about Voyager One and Two. They are robots sent into space to take pictures of distant planets. Voyager one at the time was 3.7 billion miles away from our planet and it took a time of five and a half hours for each pixel of the picture to reach Earth. In total, these two ships had explored a whopping four planets and almost sixty moons, which is a impressive task. The author really proves a point when talking about the obscurity of humans. He says that from space, you can't see any humans or any works of humans, which really shows you how insignificant we are to the universe. Along this trip, the voyagers take a picture of the entire solar system, with a beam of light from the sun glaring on the Earth. It was a chance beam and would have not appeared if the picture had been taken sooner or later.
Chapter Two:
The second chapter begins with an interesting topic. Light is very fast traveling on Earth. for example, if a light bulb goes out, then  you see it go out. Now think of a far away star in space. We see the star as it was, not as it is. what this means is, if the star went out, you would not immediately see it. It would take years for us to see it go out because even though light is fast, the expanse of space is enormous. Galileo was a great figure of history. He challenged the common geocentric theory to a heliocentric theory. By using the "first astronomical telescope", he deduced that everything in our solar system orbited the sun by looking at neighboring planets and our moon. Another astronomer, James Bradley, discovered an important point to support the heliocentric theory. He found the aberration of light, which is a trace of a ellipse made by a star. the stars would only form this if the Earth were orbiting the sun.
Diagram of Voyager One: