Several major breakthroughs have helped contribute to the emerging field of astrobiology. Focusing on these developments, this fascinating book explores some of the most important problems in this ...field. It examines how planetary systems formed, and how water and the biomolecules necessary for life were produced. It then focuses on how life may have originated and evolved on Earth. Building on these two themes, the final section takes the reader on a search for life elsewhere in the Solar System. It presents the latest results of missions to Mars and Titan, and explores the possibilities of life in the ice-covered ocean of Europa. This interdisciplinary book is an enjoyable overview of this exciting field for students and researchers in astrophysics, planetary science, geosciences, biochemistry, and evolutionary biology. Colour versions of some of the figures are available at www.cambridge.org/9780521875486.
The solar system has a rather well-known history. Looking at the present situation, one might get the impression that it was a rather stable and well-defined system: the orbits of the planets appear ...to be stable, climate and atmospheres on the planets have been determined, the risk of collision with other bodies (comets, asteroids, meteorites) seems to be small. However it is known today that the evolution of life on Earth was neither a steady progression nor uniform. There were several periods of mass extinction. These catastrophic events played a crucial role in the rise of new species. Events of astrophysical origin include: Asteroid impacts - Major solar variability (space weather) - Nearby supernovae - The passage of the solar system through dense interstellar clouds. Catastrophic cosmic events of this type appear in the range of some 100 million years. The author discusses whether and how such events could have occurred in the solar system as well as in the recently found extrasolar planetary systems. In this text, which addresses readers in the field of Astrophysics and Astrobiology but also Geophysics and Biology these cosmic catastrophic events are described at an intermediate student's level.
Provider: - Institution: - Data provided by Europeana Collections- Daŭro: 50 min., 44 sek.- Amri Wandel prelegis pri la serĉado de vivo en nia sunsistemo kaj ekster ĝi. La prelego okazis en la 38a ...Kataluna Kongreso de Esperanto, kiu okazis en Àger en oktobro 2017. Filmis Mga.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Daŭro: 50 min., 44 sek.- Amri Wandel prelegis pri la serĉado de vivo en nia sunsistemo kaj ekster ĝi. La prelego okazis en la 38a ...Kataluna Kongreso de Esperanto, kiu okazis en Àger en oktobro 2017. Filmis Mga.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
La nostra comprensione dell'universo si basa sul modello cosmologico del big bang, che descrive un universo in espansione il cui sviluppo è iniziato 13,8 miliardi di anni fa da uno stato caldo e ...denso. Questo modello introduce una forteprospettiva evolutiva e storica nella spiegazione di molti fenomeni fisici osservati, tra cui l'origine della vita e la sua possi-bile distribuzione nell'universo. Prendere correttamente in considerazione il “quadro generale” e il suo dispiegamento temporale è rilevante ai fini dell'astrobiologia e del SETI (la ricerca di intelligenza extraterrestre.
SETI è una delle sfide significative per la sua area che espande i limiti della grande storia. La grande storia aveva esercitato sulla World History un impatto simile a quello che le precedenti ...storie nazionali avevano avuto sulla storia religiosa. La grande storia cerca di usare le prove e le migliori analisi teoriche per integrare gli studi del cosmo, della Terra, della vita sulla Terra e dell’umanità. SETI condivide l’interesse per il cosmo, ma prende in considerazione esopianeti, astrobiologia e la possibilità di intelligenza extraterrestre. In questo articolo, si considera la relazione in via di sviluppo tra gli obiettivi di SETI e la grande storia
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