Archivo: Planetoid crashing into primordial Earth

Descripción: Artist's impression of a 1000km-diameter planetoid hitting a young Earth. Artist's description: "A planetoid plows onto the primordial Earth, during the eons of time when conditions were ripe for the development of life. It is possible that life of kinds unknown to us appeared repeatedly only to be destroyed in collisions like this one which could 'rework' the entire surface. Fortunately the average size of debris declined sharply through geologic time, but the supply of wayward rocks a few kilometers in size is by no means exhausted."
Título: Planetoid crashing into primordial Earth
Créditos: Donald Davis' official site.
Autor(a): Don Davis (work commissioned by NASA)
Permiso: Released into the public domain
Términos de Uso: Dominio Público
Licencia: Dominio Público
¿Se exige la atribución?: No