Explaining the curvature of the space-time according to Albert Einstein's theory, to a group of the new students who joined the university this semester. At our astronomical observatory hall at Birzeit University, on Sep 6, 2017.
Explaining the curvature of the space-time according to Albert Einstein's theory, to a group of the new students who joined the university this semester. At our astronomical observatory hall at Birzeit University, on Sep 6, 2017.