Asteroid warning: Space rock the size of the Great Pyramid of Giza to skim Earth NASA has been tracking an asteroid the size of Great Pyramid of Giza which is travelling at 29,000mph. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Yellowstone volcano: How 'sleeping GODZILLA supervolcano could tear GUTS out of US'Global Health: Diagnoses by Horn, Payment in Goats: An African Healer at WorkNASA asteroid tracker: 650ft asteroid hurtling for 'Earth approach' at 16,000MPH THIS WEEKNASA asteroid ALERT: Asteroids 'STRONGER and HARDER TO DESTROY' than first thoughtTyrannosaurus Rex: The Once and Future KingMoon mystery REVEALED: Is THIS why there are swirls on the face of the moon?