Theory of Relativity revisited: New force at large distances

Is there something missing from Einstein's equations' Daniel Grumiller from the Vienna University of Technology is proposing a new model of gravity which could reconcile the theory of relativity with astronomical observation. Vienna (VUT). Einstein revolutionized our understanding of the universe - but until today, some important questions in gravitational physics remain unanswered. While the motion of Planets around the Sun can be predicted with great accuracy, the speed of the stars circling the center of galaxies can still not be explained satisfactorily. The existence of invisible "dark matter" has been proposed, to explain these phenomena. At the Institute for Theoretical Physics, Daniel Grumiller is doing research on the theory of gravitation. His calculations show that an extension of the theory of relativity could answer open questions.