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Astronomy Name __________________________________ Formation of the Solar System Directions: Use the words in the text box to complete the blanks. Number the sentences 1-15, in chronological order. gravity Saturn nebula asteroids stellar wind moons Sun meteoroids supernova planets particles solar nebula gaseous flattening cooler ____ Icy matter and cooler gases settled on the outside of the disk where it was cooler. Planets such as______________ formed from this. ____ The disk grew thinner as the solar nebula continued spinning. ____ The solar nebula began spinning and _____________. ____ The explosion made waves that squeezed the cloud. ____ The center got so hot it became a star we call the _______. ____ A powerful force called _______________ pulled the gas and dust together. ____ Some groups of particles grew bigger and bigger. These later became _______________ and _____________. ____ Our Solar System began as a molecular cloud of dust and gas. ____ The _________ _______ blew dust and gas around the solar system. This leftover dust and gas formed smaller bodies like ______________ or _______________. ____ An exploding star, called a _____________, disturbed the cloud. ____ The _______________ of dust and gas began to stick together. ____ The cloud began to collapse. ____ Near the center only _____________ material could stand the heat. ____ This turned the cloud into what is called the ________ __________. ____ The solar nebula became hot and dense in the center. The surrounding disk of gas and dust was ___________ at the edges.