Doomsday: April 13, 2029
Apophis is the name for 2004 MN4, a Near-Earth Asteroid predicted to pass closer to Earth than any other known asteroid on April 13, 2029. It is 1,300 ft long and will pass within the orbit of our geosynchronous satellites (22,300 miles). What's scary is a rock of this size comes this close to us every 5 years though this is the new best candidate for a collision. 1,300 ft is pretty big and would have global consequences, but not an "Extinction Level Event." It would cause large tidal waves on the ocean and flood coastal cities if it hit the ocean (most likely) or it would cause a whole lot of dirt to cloud the Earth's sky should it hit land (not to mention cause a HUGE crater). It ranks 4 out of 10 on the Torino scale.
The chances of it colliding with Earth are now about 1 in 60, however, as its position is more accurately tracked the chances of it colliding with Earth lessen...hopefully.
There's a great interactive animation of this asteroid at the NASA website. You can also read NASA's article and track the orbits of all the other 800+ Potentially Hazardous Asteroids.







































