Notice bibliographique
- Notice
Type(s) de contenu et mode(s) de consultation : Texte noté : sans médiation
Auteur(s) : Marchi, Simone
Titre(s) : Colliding worlds [Texte imprimé] : how cosmic encounters shaped planets and life / Simone Marchi
Publication : Oxford, United Kingdom : Oxford university press, 2021
Description matérielle : 1 vol. (IX-209 p.-[8] p. de pl.) : ill. en coul. ; 24 cm
Note(s) : Bibliogr. p. [191]-192. Index
Some 4.6 billion years ago, a planetary system was born form a disc of gas and dust
surrounding a young star. Specks of dust, pushed into dense clumps, collided stuck
together, and grew. While the gas disappeared, the growing bodies clashed in a final
violent phase, leaving a series of planets, and much debris. The planets jostled and
moved around as they sought a stable arrangement, knocking many small fragments out
of the system altogether while others forms a distant icy fringe. The massive violent
collisions of this time gouged out vast craters form the newborn planets, and sometimes
created moons. Such was the birth of our Solar System. Only recently have scientists
begun to find subtle clues of these ancient, violent times. Remarkably, they are still
there, if we look carefully at the Earth's oldest rocks, at Mars and the Moon with
their ancient surfaces, and at the asteroids, which are themselves startlingly varied
small worlds. Clues are also to be found in the meteorites that have landed on Earth.
From such splinters, from the precious collection of lunar rocks brought back by the
Apollo astronauts, and the information gleaned by spacecraft and the Mars rovers,
we are slowly building up a picture of the early days of the planets
Sujet(s) : Origine de la vie
Système solaire -- Origines
Indice(s) Dewey :
576.83 (23e éd.) = Origine de la vie
Identifiants, prix et caractéristiques : ISBN 9780198845409. - ISBN 0198845405 (rel.)
EAN 9780198845409
Identifiant de la notice : ark:/12148/cb46834050t
Notice n° :
FRBNF46834050
(notice reprise d'un réservoir extérieur)
