The Lunar 100 by Michael Bird Number 1 The Moon The moon is a wonderful object to study, there are so many craters, mountains, valley and seas that it would take a lifetime to observe every single one. The moon is aprroximately 4.5 billion years old and is 2000 miles in diameter. The moon orbits the Earth at 2,288 miles per hour and has an orbit of 1,423,0000 miles. The moon has no atmosphere which of course stops the Moon from having any weather or wind. Water was discovered on the moon in Nove