The most famous theory he found out was; gravity.
he saw an apple falling from a tree and it got him wondering why things fell
Isaac Newton was never married.
Isaac Newton did not have a middle name.
Newton's Laws were not invented, they were discovered by Sir Isaac Newton, which is how they got their name.
Isaac Newton got up to 16 digits of pi when using his method or he calculated 3.1415926535897932
He never got married after engagement
An apple fell on his head so it made him think "Why did the apple fall on my head" so he revealed GRAVITY to the world! he stated for gravity what goes up must come down
He got older and then died.
Isaac Newton studied Motion and the laws of motion and gravity, space, the stars, math , he created calculous. tip go to Bing.com and type in your question.
He never got engaged. he did^^^he just never got married
he got drunk and sold his cat