Exploding stars seen across immense distances show that the cosmic expansion may be accelerating-a sign that an exotic new form of energy could be driving the universe apart
Robert P. Kirshner is the Clowes Research Professor of Science at Harvard University and the Chief Program Officer for Science at the Gordon and Betty Moore Foundation. A former director of the University of Michigan Observatory, and a member of the National Academy of Sciences, he was awarded the 2014 James Craig Watson medal by the National Academy of Sciences for his role in the discovery of cosmic acceleration.
