Terraform Mars.. Today!

Space scientist Christopher McKay and Robert Zubrin, author of The Case For Mars, have proposed a more extreme method of greenhousing Mars. They believe that hurling large, icy asteroids containing ammonia at Mars would produce tons of greenhouse gases and water. For this to be done, nuclear thermal rocket engines would have to be somehow attached to asteroids from the outer solar system. The rockets would move the asteroids at about 4 km/s, for a period of 10 years, before the rockets would shut off and allow the 10 billion ton asteroids to glide towards Mars. Energy released upon impact would be about 130 million megawatts. The energy of one impact would raise the temperature about 3є C and melt about a trillion tons of water.

Using this knowledge, I'd like to ask the good people of NASA, that European space agency, and any other space agency to start programs promoting the above method.