ASK!

Kids ASK! about Science & Technology

“Our Solar System was created when a nebula, made up of mostly hydrogen, gradually collapsed and formed a spinning protostar. Gravitational contraction heated the protostar and a nuclear fission reaction was sparked in the hot, dense gas that condenced at its center. Our Sun was born. The planets were formed from the remaining disc of material still swirling around our new-born Sun. The largest four of our planets were composed of mainly hydrogen as well as helium. They and the Sun are relics of protostellar material that existed 4.6 billion years ago. The impurities went to form the terrestrial planets.”

Source : “Solar System” on evula.org. (The article is found at www.evula.org/solarsystem/index.html.)

If you want to find out more information on the “Solar System”, you may refer to the following books :

Exploring the planets in our solar system by Rebecca Olien
Publisher : New York, N.Y. : PowerKids Press, 2007
Call No. : J 523.4 OLI

The solar system by Chris Oxlade
Publisher : London : Hodder Wayland, 2005
Call No. : J 523.2 OXL

Solar system by Steve Parker
Publisher : Tunbridge Wells, Kent : Ticktock Media, 2006
Call No. : J 523.2 PAR

All websites are last accessed on 24 August 2007. Please refer to the terms and conditions on the homepages for use.
For the availability of the above book titles, please check the library catalogue.

Answered by Ms Ong Tin Ling, Librarian, Children’s Services

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