Einstein's Theory of General Relativity Is Helping Us Map the Universe

Gravitational waves detected 100 years after Einstein's prediction, MIT News

General Relativity Theory. if light has no mass, why is it…, by Saiumeshchandra

Introduction to general relativity - Wikipedia

Einstein's Theory of Relativity, Critical For GPS, Seen In Distant Stars - NASA

New Interactive Map of the Universe Allows People To Scroll Through the Cosmos to the 'Edge of What Can Be Seen

Einstein's general relativity theory is questioned but still stands 'for now,' team reports

Science Made Simple: What Is the Theory of Relativity?

Light Echo From Behind a Black Hole Confirms Einstein's Theory of General Relativity

In Einstein's theory of general relativity, spacetime acts on matter