Now even with space exploration, this mystery has now faded. There is an inner solar system which is made up of Sun, and the planets Mercury, Earth, Mars and Venus. This site gives a comprhensive view of this mysterious system. Overall they have made our lives easier as we go about our fast paced lives. This site is for those who would like to surf the net and read about the numerous inventions of the past and present.
Crystals are beautiful things.
This site has some ideas and some good photographs of crystals grown using household stuff. The cell division process called mitosis is always difficult for students who are studying for the first time. This site in a very simple animation clearly outlines the five phases of mitosis in a typical plant cell. A nuclear reactor consists of a graphite core which has a number of channels. These channels are filled with rods of a heavy metal called uranium.