Space based threats, including asteroids and aliens a load of B.S.
I am calling bullshit on the entire Ison/asteroid scenario.
People need to be onto these things themselves, if there was a disaster coming there are too many independent astronomers out there with 16 inch reflector telescopes, which are actually cheap to make now, (click this link, you will be shocked at how cheap they are) and with tens of thousands of ultra high powered telescopes out there now in private hands, private astronomers would be ALL OVER THIS. The new reality is that the million dollar telescopes of 20 years ago can be had nowadays for less than the cost of a Harley.
They can easily fake convincing “asteroid impacts” with ICBM nukes
All it would take to make an icoming ICBM look like an end of the world asteroid is a little tungsten wool attached to the outside of it, to make a freakishly bright light show with an enormous tail coming in. And an incoming ICBM looks like a freakishly bright meteor anyway, it’s just a re-entering spacecraft which is always very bright. If this light show was followed by an ocean based detonation, with the ICBM exploding at a depth of a mile or so, that “meteor” could be used to create a tsunami similar to the Japan tsunami.