Or Graur is Senior Lecturer in Astrophysics at the University of Portsmouth's Institute of Cosmology and Gravitation.
""Supernovae — exploding stars — were first observed as far back as AD 185, by Chinese astronomers. In 1998, their use to measure distances to faraway galaxies enabled the discovery that the Universe’s expansion is accelerating — part of an astrophysics revolution. “I sincerely hope that in ten years, twenty at most, this book will be woefully out of date,” writes astrophysicist Or Graur in his accessible introduction. It includes a periodic table coloured to show chemical elements formed from supernovae, such as calcium and iron."" —Nature