Sky and Telescope is offering a free black holes eBook:
This free eBook from Sky & Telescope magazine includes four articles from the experts, who explain various aspects of black holes.
- “A Quasar in Every Galaxy?” by Robert Irion summarizes observations and theories about the supermassive black holes that lurk in the core of almost every major galaxy.
- “How Black Holes Helped Build the Universe” by Christopher Wanjek shows how, without black holes, we wouldn’t recognize the universe around us, and we might not even exist.
- “Spinning Hearts of Darkness” by Laura Brenneman suggests that measuring black holes’ spin can tell us how they form.
- “Einstein’s Shadow” by Camille Carlisle introduces a planet-wide telescope that has set its sights on imaging a black hole directly.