'I assume the scientists are hoping we'll pay attention if they say there is a big one coming.'
If its dinosaur size wipe out size, it is in all probability better they did not let on.
I mean they could say'Its coming in 2012'[There is some theory that some ancient scripts say this] Then we all go on a spending spree, then 2012 comes and its a 'damp squib' and only New York or LA gets knocked out- and the rest of us are all broke coz we spent it all in anticipation street farewell parties
Nasa scientists at Ames Research Center in Mountain View say scientists did something Monday night that they've never been able to do before. They were able to predict where and when an asteroid would enter the earth's atmosphere.
they were able to predict the impact 12 hours in advance
They had a shock some years ago when they found a big one that passed very close to Earth and they picked it up as it went away. They had missed the approach completely. It's all in the timing of the orbits of the Earth and the Asteroid.