astéroides
961 mots
4 pages
astéroides fesfgrgregyrgggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- ggggggggggggggggggggggggggggggggggggg gggggggggggggggggggggggggggggggggggggggggg gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg- gggggggggggggggggggggggggggggggggggggggggggggg g g g g g g g g g g g g g g g g g g g g g g g gggg gggg g g g g g g g g g g g g g g g g g g ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffff ffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ff ffffffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff- fffffffffffffffffffffffffffffffffffffUn astéroïde est un petit corps du Système solaire composé de roche, de métaux et de glace, de forme irrégulière et dont les dimensions varient de quelques dizaines de mètres à plusieurs centaines de kilomètres1. Quand ces petits corps entrent dans l'atmosphère terrestre et qu'ils réussissent à en toucher la surface, ils deviennent des météorites.
Le premier fut découvert en 1801, on en dénombre actuellement plus de 580 000. Une grande partie