Interesting Fact - Money
According to the Royal Mail in the UK, a letter to Mars would require 18,416 first-class stamps. (Royal Mail contacted NASA after 5-year-old Oliver Giddings asked the Royal Mail how much it would cost to post a letter to the red planet. The answer came back with a cost of £11,602.25 US$18,003.40. Of course Royal Mail then added the £2.25 (US$3.40) to send the letter from Britain to NASA in Florida.)