Space, Time and Gravity
from Arizona Science
Measuring gravitational waves for the first time
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What this episode covers
Einstein taught us that gravity is the curvature of spacetime. What does this bizarre-sounding statement mean and how do working physicists put it to use? Dr. Sam Gralla, Assistant Professor of Physics, describes how researchers use the mathematics of Einstein's theory to make concrete, testable predictions about the astrophysical universe. One such prediction was spectacularly verified last year as scientists measured tiny vibrations in spacetime - gravitational waves - for the first time, hearing the distant 'chirp' of two black holes merging. What is the next frontier in theoretical gravitational research, and what black hole song might experimenters hear next? In this episode: Samuel Gralla, Ph.D., Assistant Professor in the UA's Department of Physics; Leslie Tolbert, Ph.D., Regents' Professor in the UA's Department of Neuroscience
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