Changes to Scratchpad between r13 and r14
'''How Big Is Mars?'''
Mars, with a diameter of about 6800 kilometers., is a little more than half the size of Earth. If Earth was the size of a cricket ball, Mars would be about the size of a golf ball.
-- http://www.lessonplanspage.com/more/205mar.html
The Moon's diameter is 3,474 km.
-- http://en.wikipedia.org/wiki/Moon
The average diameter of the reference spheroid [of the earth] is about 12,742 km. --> The average diameter of the reference spheroid [[of the earth]] is about 12,742 km.
-- http://en.wikipedia.org/wiki/Earth
Difference between Mars and Moon: 3326km
Difference between Mars and Earth: 5942km
Legend
Only in r13
Only in r14 --> Modified slightly between r13 and r14