posted on Oct, 30 2003 @ 07:14 PM
It would be very difficult or near impossible to avoid a large asteroid that's on a direct collision course with earth. Because of the mass and
inertia of earth and the asteroid, changing the course of the asteroid would not be easy because of it's massive size.
Of course, some smaller asteroids that don't pose a threat to the existance of man can be ignored, but we have to pay attention to anything bigger
than 50m. That's when the asteroid starts coming through the atmosphere instead of buring up like most others do.
The Tunguska asteroid (the one that blew up in Siberia) was about 100 meters in diameter. It made it partway through the atmosphere, but then it
exploded. It flattened like over 1500 sq kilometers of forest. Now imagine what would happen if it hit the earth.
In 1994, Congress told NASA to start monitaring asteroids that were 1 km or bigger in diameter, which would cause a major disaster if it hit the
earth. In reality, there are less people monitoring asteroids at one time than how many people work at theh average McDonald's resturant.
It has been concieved of using a spaceship as a tugboat, moving the killer asteroid slowly at years at a time. I'm a bit skeptical about this,
because wouldn't the asteroid drag the spaceship instead of vice versa?
Sending a nuke up there is not a good idea. Why? Instead of a huge asteroid hitting earth, you now have hundreds of smaller potentially threatening
asteroids, most of them missing earth of course, heading towards us. Plus, the fallout from the blast would float around in space, not a good thing
for the aliens.