Last Updated on May 5, 2015, by eNotes Editorial. Word Count: 563
Frederick Hallam, a scientist, discovers a substance, plutonium-186, that should not exist under the physical laws in the universe. It becomes more radioactive over time, shooting out positrons. This substance is transmitted to Earth from a para-universe in which physical laws are much different. This substance provides cheap, seemingly endless, and nonpolluting energy. Increasing amounts of it can be attracted by use of a device called the Inter-Universe Electron Pump. In exchange for plutonium-186, Earth provides tungsten; in the para-universe, tungsten emits electrons and thus provides energy.
The first section, “Against Stupidity,” details the Pump’s discovery from the point of view of Peter Lamont, who is writing a history of this scientific development. He decides that the Pump may transfer some of the physical laws of the para-universe to Earth’s universe (and vice versa), with the result that nuclear reactions in the Sun will grow stronger and the Sun will turn into a nova, wiping out all life on Earth. At the same time, suns in the para-universe will cool down.
Lamont warns about the possible dangers, but his warnings are paid little heed. He attempts to communicate with the para-universe aliens, aided by linguistic expert Myron Bronowski. Ultimately, they succeed, receiving a message that appears to warn that the Pump is dangerous but also appearing to suggest that authorities in the para-universe will not stop the process. It is up to humanity to do so.
In the second section, “. . . The Gods Themselves,” locale shifts to the para-universe. The inhabitants include three types of alien children with different characteristics: Rationals, Parentals, and Emotionals. The Parentals give birth to the other two types, and one of each of the three types constitute a triad who occasionally melt together in a sexual process, experiencing pleasure but later not remembering all that took place during merger.
There are also Hard Ones, other aliens who do not melt. A Hard One is the adult form of a Rational-Parental-Emotional triad, constituting a permanent melding of the mature triad. A Hard One named Estwald began the energy interchange with Earth’s universe because of a winding down of the energy sources in theirs. The Hard Ones know that this may cause Earth’s sun to explode, but they still will not stop the process because that explosion would result in emission of a huge source of energy for them. An Emotional (Dua) is troubled by this and warns the people of Earth’s universe of the dangers of the Pump. It is then revealed that Dua is part of the triad that makes up Estwald.
In the third section, “. . . Contend in Vain?,” Benjamin Allan Denison, a scientist and past colleague of Hallam, becomes involved with a female Lunar tour guide named Selene. The Moons inhabitants have been unable to use the Pump there, but they wish to as a means of becoming more independent from Earth. Denison confirms that the Pump is a danger to the Sun’s stability but suggests that if there are two parallel universes, there must be more. A method is developed of entering into an exchange with a cosmeg, or cosmic egg universe, while conducting the exchange with the para-universe, so that the effects will balance out, avoiding the danger of solar explosion. In the books conclusion, Selene asks Denison if he will father her (recently authorized) second son by artificial insemination.
Last Updated on May 5, 2015, by eNotes Editorial. Word Count: 74
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