Loner asteroids show planets formed quickly

• Autores: Leah Crane
• Localización: New scientist, ISSN 0262-4079, Nº. 3138, 2017, pág. 8
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A few asteroids with no families could shed light on how Earth formed. Those that have survived for 4 billion years hint that the planets in the solar system were created by a sudden collapse of dust rather than a slow build-up of space rocks. This comes after the discovery of what may be the oldest asteroid family seen so far in the inner asteroid belt. An asteroid family comprises shards of rock ejected from the smash-up of a single early asteroid.