‘Planet Killer’ asteroid hurtling toward Earth  news.com.auTwo Huge Asteroids Are Approaching Us; One Among The Largest Near Earth  ForbesMountain-size 'planet killer' asteroid will make a close approach to Earth this week — and you can watch it live  Livescience.comNASA warns that a 98ft plane-sized asteroid is heading towards Earth soon  The Times of IndiaESA - Close approach of asteroid (415029) 2011 UL21  European Space Agency