human
The Centaurians in the space ship, Crawford continued,
gpt
I can pack the explosive in the projectile, all right, Dixon answered grimly.
human
We will need only a lump the size of an egg, and a small container of the heavy gas that activates it. The explosive itself is a radium compound that, when allowed to come in contact with the activating gas, becomes so unstable that any sharp blow will set it off in an explosion that in a matter of seconds releases the infinite quantities of energy usually released by radium over a period of at least twelve hundred years. The cataclysmic force of that explosion should be enough to wreck a small planet.
gpt
Good! Crawford commended weakly.
human
If you can only strike your blow to-night, Bruce, our world still has a chance. If only you--