lunes, 20 de septiembre de 2010

the outer solar system

comet: a ball of rock and ice that orbits the sun

meteorid:a small asteroid wich may be far out in the solar system

meteor : a meteorid that enters Earth´s atmosphere and burns with a streak of light

meteoride:any part of a meteorid that reaches to Earth´s surface

No hay comentarios:

Publicar un comentario