The sky is falling (video)

Credit: Mashable/YouTube

Well, not quite, but there's a lot of big, heavy, fast moving rocks up there. And there is ample evidence that from time to time, one of them will run into the Earth. Witness Meteor Crater in Arizona, Gulf of Carpentaria & the Gulf of Mexico.

Much more recently, there is the much smaller space object which intersected the Earth's orbit in Russia.

So, what's being done to protect us against such a potential Armageddon?

http://www.theatlantic.com/magazine/archive/2008/06/the-sky-is-falling/306807/

http://www.theregister.co.uk/2013/02/16/space_asteroid_impact_inevitable/ / Asteroid Earth asteroid meteor meteorite planet orbit orbits quakes tug of Earth's gravity impacts ground-shaking blast radius disk disc discus of damage space rock asteroid impacts Armageddon Deep Impact breakthrough ideas seeming obvious retro­spect Columbia University geophysicist Dallas Abbott  craters comets asteroids smashed into Earth geologists space strikes rare events era of primordial mists number of craters found on land 70 percent Earth’s surface water most space objects hit the sea searching for underwater craters caused impacts other forces such as volcanoes  spine-chilling evidence several enormous asteroids or comets have slammed into our planet quite recently in geologic terms time Gulf of Carpentaria north of Australia 536 A.D. striking at up to 50,000 miles per hour release as much energy as 1,000 nuclear bombs Debris dust gas gases thrown into the atmosphere impact would have blocked sunlight temporarily cooling the planet contemporaneous accounts describe dim skies cold summers poor harvests 536 and 537most dread portent took place the Byzantine historian Procopius ocean impact rain as corrosive as battery acid ancient texts such as Genesis and the Epic of Gilgamesh support her conjecture, describing an unspeakable planetary flood in roughly the same time period /