Abhay Ashtekar

Abhay Ashtekar
(814) 863-9601

Abhay Ashtekar is an Eberly Professor of physics, and the director of the Institute for Gravitation & the Cosmos. He is an expert on quantum gravity and general relativity. His research focuses on the beginning of the universe and black holes.

Ph.D., University of Chicago, Physics, 1974
Research Interests: 
Quantum gravity and general relativity


his drawing shows the observed versus actual positions of a distant star whose light is distorted by the curvature of space around a heavy star that is between the distant star and the observer.
In this time-lapse movie from 8 Hubble Space Telescope images, in the blackness of space a white dot -- the white dwarf star Stein 2051 B -- moves in an arc as it passes in front of a distant star. Credit: NASA, ESA, and K. Sahu (STScI)