QUESTION 2

Untitled Slide

• Explain what is means that the earth and moon make up a dual planet system.
• All satellites of planets have a mass of .025% or less of their planets
• The moons mass is 1.23% of the Earth's mass
• A dual planetary system is when the masses of the two objects are similar

WHERE IS THE SYSTEMS CENTER OF GRAVITY

• The center gravity between the earth & moon is inside the earth
• Since earth has a bigger mass the earth has a great gravitational pull
• In a few million-billion years this will not be the case
• Because the moon is moving farther apart an 1.5 inches a year