
The Solar System is the system of the and the objects that it. It when a dense region of a collapsed, forming the Sun and a . The Sun is a typical star that maintains a by the of hydrogen into helium at its , releasing this energy from its outer . Astronomers

Collect the materials needed to construct the planets.It is best to have. . Cut the string that the planets will hang from.You will need to cut these at different lengths so the planets hang at different levels.. . Find objects to use to suspend the planets.You can find these items at the craft store along with your other materials.You will need a wooden dowel that is 1/4 inch in diameter. . Making a solar system mobile is a great activity for when you're learning about the solar system. All you need to build your mobile are some simple supplies and an assortment of craft paints.

According to the , there are eight planets in the Solar System, which are (in increasing distance from the Sun): Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Jupiter is the largest, at 318 , whereas Mercury is the smallest, at 0.055 Earth masses. The planets of the Solar System can be divided into categories based on their. . These are lists of planets. A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk. There are eight planets within the ; planets outside of the solar system are a.