Because physics is the basic job, the underlying thing that they do.
Policticws won’t change that.
They’re still using the Hubble space telescope, still using the Chandra x-ray observatory, etc.
Politics does not magically change physics.
Politics does make it harder to do your job, but it doesn’t magically make comets do things contrary to physics.
It doesn’t magically change orbits, or make cometary debris magically bigger than the parent body.
Politics is not magic, and neither are comets.
No matter how many times someone rolls the d20 die and shouts “magic missile”, ISON will not kill us.
And when January ends and we aren’t dead, will you admit that BPEarthwatch was wrong?
Will you have it in you to admit that?
Bluesmover didn’t.
He was given a wager, and chickened out.
Well if some of the debris from Ison doesn’t impact us, the Missiles launched from Iran by the Muslim Exchange student that Obama is having trained at NASA, certainly will. < /sarc>