Detailed Instructions: You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.
Q: Largely because of the massive amounts of gravitational force involved.  A sphere is the only sustainable shape when talking about forces of that magnitude.  Stars are incredibly dense towards their core, and over billions of years the matter will coalesce in a sphere like shape.
A:
1