you guys probably won't read this, but your posts are a bit short-sighted cutter and creston. tracking space objects isn't just about last minute interventions. you guys have been watching far too much tv if you think that's the case. it's more about plotting future impacts; nothing we've detected so far has a high likelihood of impact anytime soon, but i know of at least one that has a reasonable likelihood of impact in about 2080. we may not have the tech to stop an impact today, but in 70 years? probably, esp. if we know it's coming. that's the value of the tracking programs, not what we can stop tomorrow.