About 4.6 billion years ago, the __________ started as a giant cloud of gas and dust called a solar __________. Some unknown event, perhaps a supernova, caused a __________ collapse at the center of the cloud. Most of the dust and __________ in the cloud collapsed on itself. It formed a __________ of gas and dust. The heat of this collapse caused fusion to occur, resulting in the creation of the __________.
spinning disk
nebula
gas
gravitational
Sun
solar system
About 4.6 billion years ago, the nebula started as a giant cloud of gas and dust called a solar system. Some unknown event, perhaps a supernova, caused a gravitational collapse at the center of the cloud. Most of the dust and gas in the cloud collapsed on itself. It formed a spinning disk of gas and dust. The heat of this collapse caused fusion to occur, resulting in the creation of the Sun.
Explanation: The process began with a nebula, a large cloud of gas and dust in space. An event like a supernova likely triggered the gravitational collapse of this nebula, leading to the formation of a spinning disk. This disk of gas and dust eventually created our Sun and the other bodies in the solar system.