Home » Look at Comets by Ray Spangenburg
Look at Comets Ray Spangenburg

Look at Comets

Ray Spangenburg

ISBN : 9781417631421
Enter answer

 About the Book 

Relics from the formation of the solar system, some 4.5 billion years ago, comets are made of the same stuff as the solar nebula from which the Sun, planets, asteroids, and moons of the Milky Way are made. Formed in the coldest regions of the solar system, comets likely first carried to Earth elements essential to life, such as water ice, carbon monoxide, and carbon dioxide, perhaps at that crucial period when conditions on this planet were most favorable for the creation of life. Today, scientists look at comets as a kind of deep-space time machine that allows them a glimpse into the distant past when the solar system was still young and life on Earth had not begun.