NATS 1570 Study Guide - Final Guide: Caloris Planitia, Mariner 1, Orbital Period

• School: York University
• Department: Natural Science
• Course: NATS 1570
• Professor: Mary- Helen Armour

Document Summary

In our solar system there are 4 inner planets, mercury, venus, earth and mars. We have already looked at earth, now we will look at the others and see how they compare. For example in the case of mercury, the year is 88 earth days long, the rotation on its axis is 59 days long. This is a ratio of 3:2 - we refer to this as a resonance since there is a number relationship. As a result of the these two times being close, the time between sunrises on. Since mercury also has a diameter of only 4900 km, it is not big enough to hold onto any significant atmosphere. As a result the temperatures from the dark to the light side vary from 100. Mercury does seem to have an significant iron core, and a weak magnetic field about 1% the strength of earth"s.