There is news on the web that an asteroid known as 2007 WD5 may hit Mars on January 30th 2008. Currently there is a 1 in 75 chance of the object impacting Mars, though it is believed those odds will decrease with new statistical information about the asteroid's orbit, this information should be available in early January.
The impact could come close to the equater where the rover Opportunity has been exploring the Martian surface since sometime in 2004. Stay tuned to SpaceRead.com for more information as it becomes available about 2007 WD5