Homework 1. Due 10/14

1. Sketch the phases of Jupiter as seen from (a) Earth, and (b) Saturn. Show the location of the planets in their orbits, and the corresponding appearance of Jupiter.

2. Discuss the common characteristics of the physical sciences. How are they different from the life sciences? How does astrology differ?

3. Explain the astronomical basis for the following lengths of time:
a. year
b. month
c. day


4. A planet is said to be at opposition when it is on the other side of the sky from the sun (opposite the sun). Why is Mars (or Jupiter, Saturn,) brightest when it is at opposition?