Legendary rock band Aerosmith (fronted by Liv's father Steve Tyler) contributed "I Don't Want to Miss a Thing" to the soundtrack. The song became the first Number 1 hit of the band's lengthy career.
Hollywood films are not generally made for scientific accuracy. In particular, many of the science details in the film are wrong. So the film should not be taken as a real description of how to deal with an incoming asteroid, but as entertainment.
See also: Asteroid deflection strategies