Title: Asteroid Impact Risk: Impact Hazard from Asteroids and Comets (Impact Studies)
Publisher: Springer
Publication Date: 2023
Language: English
ISBN 10: 303095126X
ISBN 13: 9783030951269
Binding: Soft cover
Condition: New

About this title

Synopsis

This book describes the complexity of impact hazards associated with asteroids and comets. The challenge in this regard lies in the heterogeneous nature of these bodies that endanger our planet, which is why we are conducting new experiments to better understand their unique physicochemical properties. Several generations of astronomers have tracked and mapped the orbits of asteroids and comets over the past few centuries, and telescopic surveys have only begun to discover “new” interstellar objects. In addition, cutting-edge software allow our computers to combine the orbits of these elusive bodies to study how they evolve over time and seek to match asteroid complexes as fragments of asteroidal and cometary disruptions.

Impact hazards represent one of the greatest threats to the survival of human beings in the medium term. Geological studies show that the stratigraphic record holds clear geological evidence of these rare but transcendental encounters in the history of life on our planet. The study and quantification of past catastrophes can give us clues to face future challenges in the form of potential impacts.

Further, it would be illogical to assume that Earth’s interaction with space is limited to major impacts. Every night, Earth is struck by millions of particles, and dozens of meteor showers occur around the globe every year. The study of lake and ocean sediments reveals the magnitude of the continuous contribution of interplanetary matter reaching Earth: roughly 100,000 tons per year.

Accordingly, the goal of this book is to underscore the need for society-wide awareness of the dangers associated with asteroid and comet impacts, on the basis of scientific evidence and with no intention of sparking alarmism. After all, we ourselves may only be the fruit of an opportunity given to mammals sixty-five million years ago to evolve after the conflagration that would be the downfall of the dinosaurs. If we have learned toread Earth’s geological history, we should consider ourselves a very fortunate species, and its teachings should equip us to face this problem.

The also book emphasizes the role of space missions to gain insights on these bodies, particularly describing the relevance of the DART (NASA) and Hera (ESA) missions to deflect and study Dimorphos, respectively, the small satellite of the Didymos binary asteroid.

About the Author

Josep M. Trigo-Rodr�guez’s research focuses on the formation and physical properties of primitive solar system minor bodies (comets and asteroids), and on the study of their fragments in space (dust, meteoroids) or as surviving rocks that reach Earth (meteorites). These so-called minor bodies provide clues to the origin of the solar system, as primitive meteorites are known to retain the chemical and isotopic conditions prevailing in the early solar system, though most of them have undergone various processes that altered their primeval physical, chemical and isotopic properties. Then, Dr. Trigo-Rodriguez has promoted laboratory studies of meteorites using diverse analytical techniques, remote analyses of asteroids and comets, and the determination of dynamic strength and other physicochemical data from meteor and fireball data . All these are complementary ways to gain insights into the nature of these highly porous and challenging bodies.

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