Cook Islands 2009 400th Anniversary of the Observation of Mars 25g Silver Coin

Cook Islands 2009 400th Anniversary of the Observation of Mars 25g Silver CoinCook Islands 2009 400th Anniversary of the Observation of Mars 25g Silver Coin. Mars is an earth-like planet in our solar system. With a diameter of approximately 6800 kilometres it is about half the size of the earth. A high percentage of iron oxide (rust) is responsible for its reddish shimmer. Due to this (blood red) colour it was granted the Roman God of Wars name. Through its brightness it was already known in ancient days. The planet Mars was observed more precisely for the first time with