EPSC 180 Lecture Notes - Lecture 14: Messenger

• School: McGill University
• Department: Economics (Arts)
• Course: EPSC 180
• Professor: Olivia Jensen

Document Summary

Mercury messenger: 2010, took as much energy to get into inner part of solar system as new. = same amount of energy to get something into space as it would talk to take something out of it. Come to estimate of age of surface of mercury to be about 4 billion years. To account for density if mercury: core of iron (solid at depth, possibly with liquid layer: only conductive liquid possible on mercury. Has eccentricity of orbit: perihelion (point closest to sun) of mercury relative to sun moves ahead.