ASTR 3 Lecture Notes - Lecture 1: Aswan, Scientific Notation, Ecliptic
Document Summary
Homework: all homework assignments done on www. masteringastronomy. com , make sure to register. To do well: do readings in advance of lecture, use own notes plus slides posted on course webpage when you review lecture. Lecture will cover important things, textbook covers everything in detail. The how and why are more important than rote memorization. Weekly online assignments are excellent source of questions for the two midterms and final. If it can"t be quantified, it probably isn"t science. Numbers in astronomy and physic are very large or very small. Use scientific notation for if number of digits before or after the decimal point becomes large. Speed of light = 300000000 meters/second or 300000 kilometers/second. Light year = about 6 trillion miles, is a unit of distance, not time. When we are looking at something 3 light years away, we are seeing that thing as it was 3 years ago!
