Questions with the keyword 'gravity'

• Does anything forms from a dead stars and can a black hole form from a dead star ? by to Sarah Comments: (No comments so far )
• give me the definition of a black hole by and 4 others. to Sam, Nate Comments: (No comments so far )
• what causes black holes by and 1 other. to Sam, Nat, Nate, Roberto, Sarah Comments: (So far, one comment )