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Chondrules are spherical silicate grains which formed from protoplanetary disk material, and as such provide an important record of the conditions of the Solar System in pre-planetary times. Chondrules are a major constituent in chondritic meteorites, however despite being recognised for over 200 years, their origins remain enigmatic. This comprehensive review describes state-of-the-art research into chondrules, bringing together leading cosmochemists and astrophysicists to review the properties of chondrules and their possible formation mechanisms based on careful observations of their chemistry, mineralogy, petrology and isotopic composition. Current and upcoming space missions returning material from chondritic asteroids and cometary bodies has invigorated research in this field, leading to new models and observations, and providing new insight into the conditions and timescales of the solar protoplanetary disk. Presenting the most recent advances, this book is an invaluable reference for researchers and graduate students interested in meteorites, asteroids, planetary accretion and solar system dynamics.

Chondrites (Meteorites) --- Chondritic meteorites --- Meteorites --- Chondrules

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On Earth, catastrophic impact of an asteroid or comet with truly global consequences has not happened during our written history, and the threat seems very small. Giant scars on our planet's surface are relics of an impact history stretching back more than 2 billion years, and there is no assurance it cannot happen again. In Australia there are 36 structures ranging from tens of metres to tens of kilometres in diameter, and recognised to varying degrees of certainty as having been formed by giant meteorite impact. In clear and concise language this book begins with ancient beliefs and myths ab

Meteorite craters --- Meteorites --- Meteors

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Bill Cassidy has led meteorite recovery expeditions in the Antarctic for many years. His searches have resulted in the collection of thousands of meteorite specimens from the ice. This fascinating story is a first-hand account of his field experiences on the US Antarctic Search for Meteorites Project, which he carried out as part of an international team of scientists. Cassidy describes this hugely successful field program in Antarctica and its influence on our understanding of the moon, Mars and the asteroid belt. In this 2003 book, he describes the hardships and dangers of fieldwork in a hostile environment, as well as the appreciation he developed for the beauty of the place. In the final chapters he speculates on the results of the trips and the future research they might lead to.

Meteorites. --- Meteorites --- Astrophysics --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Meteors --- U.S. Antarctic Search for Meteorites Project. --- US Antarctic Search for Meteorites Project --- ANSMET

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Astronomy --- 52 --- 552.6 --- Astronomie. Astrofysica. Ruimteonderzoek. Geodesie --- Meteorites --- Astronomy. --- 552.6 Meteorites --- Physical sciences --- Space sciences --- Astronomie --- Cosmologie --- Galaxies --- Astrophysics --- Cosmology --- Galaxies.

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A discussion of the search for geological evidence of meteorite impact structures in Britain. A constant theme is the importance of atmospheric break-up of small asteroids and comets. These fragmenting bodies produce shallow craters with low rims; three structures of this type are identified.

Meteorite craters --- Meteorites --- Meteors --- Craters, Meteorite --- Meteor craters --- Meteor impact craters --- Impact craters