Discovery of Gravitation by Sir Isaac Newton

What phenomenon was discovered by Sir Isaac Newton?

Why did Sir Isaac Newton wonder why apples fall vertically downward?

What conclusion did Sir Isaac Newton come to after much thought about the apple falling from the tree?

In which direction did Sir Isaac Newton propose the attractive force of the earth was directed?

What did Sir Isaac Newton consider as a potential object for the force of gravitation to act upon in addition to apples on trees?

Based on Sir Isaac Newton's pondering, can the force of gravitation act on objects at great heights or far distances?

What phenomenon was Sir Isaac Newton credited with discovering?

What did Sir Isaac Newton conclude about why apples fall vertically downward?

Why did Sir Isaac Newton ponder about objects at greater heights and farther distances from the earth?

What direction did Sir Isaac Newton propose the attractive force of the earth was directed?

According to Newton, why do apples fall vertically downward and not at an angle?

What did Newton consider as an example of objects that the force of gravitation could act upon besides apples on trees?

What was Sir Isaac Newton's initial observation that led to the discovery of the force of gravitation?

What did Sir Isaac Newton propose was the reason why apples fall vertically downward?