Compuesta de exiliados de un mundo devastado por el miedo y los conflictos políticos, la valerosa tripulación multinacional de Halley se está dividiendo a causa de los prejuicios y diferencias que la han acompañado desde su lugar de origen. Pero cuando aparece una especie de musgo en los pozos y corredores excavados en el núcleo del cometa, todos deben unirse en la lucha por la mera supervivencia. El futuro de la colonia Halley, y quizá de toda la humanidad, queda en manos de sólo tres personas que demuestran su capacidad para dirigirlo

Romanzo straordinario per idee, trama, struttura, complessità dei temi trattati, personaggi. Una vera epopea fantascientifica di un gruppo di persone che decidono di "colonizzare" la cometa di Halley a fini scientifici: fra ogni tipo di problemi e di sfide (tecnologiche , umane, psicologiche, politiche, scientifiche, etiche, ecc...) la storia si dipana nell'arco di decine e decine di anni (70, ovvero il ciclo della cometa) che vedranno vari ed incredibili sconvolgimenti nella vita dei *coloni*.
Storia affascinante, avvincente, emozionante che però ha il suo maggior punto di forza nelle incredibili idee che gli autori s'inventano (o forse si potrebbe dire *ipotizzano*?) e che interessano quasi ogni aspetto suddetto del contesto umano e scientifico-tecnologico. Un romanzo assolutamente da leggere. ( )

"Heart of the Comet" held my attention and was quick read for me. It raised many question for me to ponder. All these ideas were mixed into an passable action adventure story. ( )

The plot concerns an attempt to colonize Halley’s Comet.

I would not say that Heart of the Comet is a great novel. It is hard, hard science fiction, which can make it difficult to follow for many readers. Characterization is often sacrificed for exploring the many ‘what ifs’ posited. But regardless, this book did get me thinking and actually even changed my mind about something, both signs of a book that’s worth reading.

In the future, hibernation technology has been developed, so it is possible for the story to follow the same set of characters over 100+ years as they convene with the comet, build their colony and settle in underground chambers for a trip to the outer solar system, then back around the sun.

There they discover that primitive life is already established on the comet. At first, it is a battle for survival as the molds and worms, multiplying in the heat generated by the colony, almost take over the habitat while causing a plethora of deadly diseases. But the colonists eventually adapt to the alien lifeforms and even enter into symbiotic relationships with some of them in order to better survive their hostile environment. The comet’s life becomes sources of food, light, even protection for some from the vacuum of space, while the colonists change too in their relationship to that life — they are no longer strictly human anymore. This incites a conflict with the people back home on Earth, who are terrified of allowing the comet back into the inner solar system, forcing the colonists to accept that Halley is now their permanent home, and where are they going to go?

There is a lot more going on in this book, which I won’t get into, but the principle thing the novel got me thinking about was how adaptable humankind is. It seemed perfectly believable that we could settle in such an implausible, hostile, alien environment and not only survive, but make it home. This got me thinking about global warming. Yes, the effects of global warming may be devastating to our current way of life, but maybe the approach of trying to stop or reverse it isn’t the best one. Maybe we should be thinking instead of how we can adapt to the changes, and how we can make the changes work for us.

Adaptability has been our greatest weapon in the battle for survival as a species, after all. I’m not arguing that we need to make all of nature over to suit us, bend it to our will — this approach has clearly caused the problems we are now facing. But we should be thinking about how we can adapt ourselves to these changes, while using our ingenuity to survive the period of change.

A book worth reading is a book that helps you think about the world in a new way. Heart of the Comet was such a book for me. ( )

Great work of sci-fi, an interesting idea explored and thought out with hard science and great characters. ( )