Alpha radiation is a type of energy released when certain radioactive elements decay or break down. For example, uranium and thorium are two radioactive elements found naturally in the earthâs crust. Over billions of years, these two elements slowly change form and produce âdecay productsâ such as radium and radon.
Before the big race, a two week Kentucky Derby Festival takes place with events for the whole family. Then, as usual, the race will take place on the first Saturday in May 2016. On the big day, the contenders will line-up to race around a 1.25 mile track.
8. Citation crosses the finish line to win the Kentucky Derby in 1948. Called the greatest racehorse of the century along with Man o' War, Citation gave Calumet Farm and trainer Ben Jones their second Triple Crown winner in seven years. The bay colt won 27 of 29 starts in his 2- and 3-year-old seasons.