The Jet Propulsion Lab at NASA has just released a revised estimate of the likelihood of asteroid 2007 WD5 colliding with Mars on January 30. Due to tracking measurements from four different observatories, including the Calar Alto Observatory in Spain, the JPL estimates the chances of a collision are at 1 in 10,000, a significant reduction from prior estimates of 1 in 25 as recently as January 2. In other words the collision won’t happen, and the asteroid will miss Mars by 18,600 miles.

I am very disappointed as the asteroid is the size of a football field and could have been a major scientific event if it hit Mars. The asteroid was discovered in November by the NASA funded Catalina Sky Survey project in Arizona.