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:Is THIS the house where Jesus grew up?Are AI and humans set to MERGE? How a secret start-up is mind-melding people with MACHINESMatter: How Did Aborigines Get to Australia? DNA Helps Solve a MysteryNanotechnology among us but regulators aren’t doing enough to protect humans, experts warnAmerican Medical Association Opposes Republican Health PlanPerpetual motion: NASA’s orbiting space fridge will break known laws of physics