This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: The farther out we look into the Universe, the farther back in time we see! A Sense of Scale The first difficult concept is the immensity of time and space What we will be doing a lot of is stepping out of human scale Astronomers talk about large numbers in powers of ten. . This is just a shorthand for writing large numbers For example the distance to the Sun is 150 million Kilometers (150,000,000 Km) or 1.5 x 108 Km...
View Full Document