Prices of a stock will move throughout the day. Investors generally buy a stock they feel is undervalued, and sell a stock they feel is overvalued. For instance, if the price of AAPL is $600 dollars, it means the cost to purchase one share of Apple is $600 dollars.
Einstein quickly realized (or had known all along) that his new theory of gravity was really a theory of the cosmos. In 1917, he wrote a famous paper applying general relativity to the universe as a whole. Today that paper stands as the foundation for modern cosmology.
And it wasnât simply a force. According to his theory of General Relativity, gravity is much weirder: a natural consequence of a massâs influence on space. Einstein agreed with Newton that space had dimension: width, length, and height. Space might be filled with matter, or it might not.