In the year 2100, mankind on Earth, settlers in a lunar colony and aliens from the para-universe, a strange universe parallel in time to our own, are faced with a race against time to prevent total destruction of the Earth. The invention of the Inter-Universe Electron Pump has threatened the rate of hydrogen fusion in the sun, leading, inevitably, to the possibilty of a vast explosion -- and the vapourisation of the Earth exactly eight minutes later ...
- ISBN10 1857989341
- ISBN13 9781857989342
- Publish Date 10 February 2000 (first published 10 August 1972)
- Publish Status Out of Print
- Out of Print 17 June 2013
- Publish Country GB
- Imprint Gollancz
- Format Paperback
- Pages 288
- Language English