This is a very short book of 125 pages. It takes place in the future...from guess work between 2020-2030. Man has landed on Mars and there is a small colony there but power is required to make the planet habitable. Earth is overpopulated and in dire need of power.

A company has built 2 fusion reactors of unlimited power. One in the USA and another on Mars. Suffice it to say the reactors are started to full power without proper testing. Though there are warning signs...both reactors are started...the one in the USA first with a major incident...A month later the one Mars is started and explodes, knocking Mars out of orbit and headed for Earth. The book also briefly talks about who should be saved and who should live

The book is really about power and glory for one man who refuses to stop the project. The brief description of the effects of Mars approaching Earth are reasonably good. There are some chuckles as you read the story though....they have visi-phones...yet the hero must type out a telegram on a typewriter. Also in a reactor emergency there is no fail-safe way of stopping the meltdown other that physically placing 6 sticks of dynamite in a strategic location and lighting a 5 minute fuse...really? :)

But that aside it is a pretty quick and enjoyable read...could have been fleshed out more for my taste though. ( )