Huge asteroid on possible collision course with Earth (172 years from now), Christian Science Monitor
"An international team, including NASA experts, say in new research that the space rock has a one-in-a-thousand chance of an impact. They may sound like high odds, but they are enough to mean the threat from the 560-meter (612-yard) wide asteroid will have to be taken seriously."
"The future isn't looking bright, (ahem....) but here's a doomsday theory even skeptics can't totally deny: a massive asteroid, named the 1999 RQ36 was discovered in 1999 and has a width of over 1,800 feet. Scientists have said that this asteroid's impact could have a similar effect to that which allegedly wiped out the dinosaurs. Great."
"NASA will host an interactive workshop to identify objectives for exploration missions to near-Earth objects, or NEOs, on Aug. 10-11 at the Renaissance Mayflower Hotel in Washington."