The view on how astronomers once thought that the planets in universe formed is beginning to change. Astronomers once thought the guest giant plants formed slowly. Gravity pulled debris together to form rocky cores several times a mass of the Earth, the largest of these sweeping up vast amounts of gas becoming huge giants. It is thought that roughly one billion years was needed to make these planets by the core-accretion process. Recent computer modeling …showed first 75 words of 583 total…

…showed last 75 words of 583 total…core accretion might not be the correct way to go. However, disk instability models cannot rule out core accretion. Neither is mutually exclusive and one or both could be true. The one thing everyone does agree on is there is a need for more data and surveys of clusters of young stars. There's still much uncertainty surrounding planet formation. It will be very interesting with upcoming technological advances that make aid inn proving such theories.