Astronomers believe that a supernova is a massive explosion signaling the death of a star, causing a cosmic recycling of the chemical elements and leaving behind a pulsar, black hole, or nothing at all. In an engaging story of the life cycles of stars, Laurence Marschall tells how early astronomers identified supernovae, and how later scientists came to their current understanding, piecing together observations and historical accounts to form a theory, which was tested by intensive study of SN 1987A, the brightest supernova since 1006. He has revised and updated The Supernova Story to include all the latest developments concerning SN 1987A, which astronomers still watch for possible aftershocks, as well as SN 1993J, the spectacular new event in the cosmic laboratory.

All's fair in love and anarchy in Supernova, the epic conclusion to New York Times bestselling author Marissa Meyer's thrilling Renegades Trilogy This volume sees Nova and Adrian struggling to keep their secret identities concealed while the battle rages on between their alter egos, their allies, and their greatest fears come to life. Secrets, lies, and betrayals are revealed as anarchy once again threatens to reclaim Gatlon City.

From science fiction legend Cixin Liu, the New York Times bestselling and award-winning author of The Three-Body Problem, comes a vision of the future that reads like Lord of the Flies on a global scale in Supernova Era. In those days, Earth was a planet in space. In those days, Beijing was a city on Earth. On this night, history as known to humanity came to an end. Eight light years away, a star has died, creating a supernova event that showers Earth in deadly levels of radiation. Within a year, everyone over the age of thirteen will die. And so the countdown begins. Parents apprentice their children and try to pass on the knowledge needed to keep the world running. But when the world is theirs, the last generation may not want to continue the legacy left to them. And in shaping the future however they want, will the children usher in an era of bright beginnings or final mistakes? "This audacious and ultimately optimistic early work will give Liu's English-reading fans a glimpse at his evolution as a writer and give any speculative fiction reader food for deep thought." -- Shelf Awareness At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

This revised 1985 edition tells the story of supernovae, capturing the flavour of ancient astronomy.

This book investigates the question of how matter has evolved since its origin in the Big Bang, from the cosmological synthesis of hydrogen and helium to the generation of the complex set of nuclei that comprise our world and our selves. A central theme is the evolution of gravitationally contained thermonuclear reactors, otherwise known as stars. Our current understanding is presented systematically and quantitatively, by combining simple analytic models with new state-of-the-art computer simulations. The narrative begins with the clues (primarily the solar system abundance pattern), the constraining physics (primarily nuclear and particle physics), and the thermonuclear burning in the Big Bang itself. It continues with a step-by-step description of how stars evolve by nuclear reactions, a critical investigation of supernova explosion mechanisms and the formation of neutron stars and of black holes, and an analysis of how such explosions appear to astronomers (illustrated by comparison with recent observations). It concludes with a synthesis of these ideas for galactic evolution, with implications for nucleosynthesis in the first generation of stars and for the solar system abundance pattern. Emphasis is given to questions that remain open, and to active research areas that bridge the disciplines of astronomy, cosmochemistry, physics, and planetary and space science. Extensive references are given.

NOW A NEW YORK TIMES BESTSELLER! From #1 New York Times-bestselling author Marissa Meyer, comes a high-stakes world of adventure, passion, danger, and betrayal. Secret Identities. Extraordinary Powers. She wants vengeance. He wants justice. The Renegades are a syndicate of prodigies—humans with extraordinary abilities—who emerged from the ruins of a crumbled society and established peace and order where chaos reigned. As champions of justice, they remain a symbol of hope and courage to everyone...except the villains they once overthrew. Nova has a reason to hate the Renegades, and she is on a mission for vengeance. As she gets closer to her target, she meets Adrian, a Renegade boy who believes in justice—and in Nova. But Nova's allegiance is to the villains who have the power to end them both.

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