Space, Time and Gravity
Gravity warping space-time.
Einstein's theories of both Special and General Relativity have been confirmed to be accurate to a very high degree over the years.
The key idea of General Relativity is called the "Equivalent Principle". Gravity is pulling in one direction. Before Sir Isaac Newton discovered gravity, people believed the teachings of the Catholic church, that everything revolved around the Earth. They believed the geocentric theory and the Ptolemaic theory, because biblical passages suggested the sun was in constant motion while Earth remained in one place. Gravity is completely equivalent to an acceleration in the opposite direction.
Einstein's theory of space, time and gravity predicts a number of new phenomena. Distortions of the geometry of space should propagate into the depths of space as so-called gravitational waves. If enough mass is concentrated in a given location, the perfect geometrical prison should form - a region called a black hole. No object that enters such a region can ever escape! In addition, there are the big bang models, which form the foundation of modern cosmology - the study of the universe as a whole, its structure and evolution.
The key idea of General Relativity is called the "Equivalent Principle". Gravity is pulling in one direction. Before Sir Isaac Newton discovered gravity, people believed the teachings of the Catholic church, that everything revolved around the Earth. They believed the geocentric theory and the Ptolemaic theory, because biblical passages suggested the sun was in constant motion while Earth remained in one place. Gravity is completely equivalent to an acceleration in the opposite direction.
Einstein's theory of space, time and gravity predicts a number of new phenomena. Distortions of the geometry of space should propagate into the depths of space as so-called gravitational waves. If enough mass is concentrated in a given location, the perfect geometrical prison should form - a region called a black hole. No object that enters such a region can ever escape! In addition, there are the big bang models, which form the foundation of modern cosmology - the study of the universe as a whole, its structure and evolution.