How many asteroids are out there, exactly?

• Autores: David Kramer
• Localización: Physics today, ISSN 0031-9228, Vol. 68, Nº. 9, 2015, pág. 22
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The effort to find objects that might threaten Earth is far from complete, and NASA admits it won’t meet a 2020 congressional deadline to find the bigger ones.