The SciencesNovember 1, 2003
The Asteroid Tugboat
To prevent an asteroid from hitting Earth, a space tug equipped with plasma engines could give it a push
Stories by Russell L. Schweickart, Edward T. Lu, Piet Hut and Clark R. Chapman
The Asteroid Tugboat
To prevent an asteroid from hitting Earth, a space tug equipped with plasma engines could give it a push