Earth from the Galileo Space Probe

This image of Earth was taken by the Galileo space probe on December 11, 1990, when Galileo was 2 million kilometers (1.3 million miles) from Earth. What part of the Earth are you viewing? Compare this photo of the Earth with the one of the Moon. How are the Earth and Moon similar? How are they different? Find out and compare the following details about the Earth and Moon: diameter, density, composition, atmosphere, surface materials, temperature, rotation and revolution time. See the weblinks for some good resources.