... Mr. Reynolds has written an extraordinary book. A Must Read. Definitely.
The story is rather simple. Some time in the future, around 2057, mankind has developed inter-planetary travel and is about to colonize Mars. Note: It's inter-planetary, NOT inter-stellar. To get resources for expansion special ice-pushers fly around in the solar system and "push" asteroids toward inhabitated areas to be catched and processed. That book is the story of one of those ships, the ship "Rockhopper".
One day, the Saturn moon Janus leaves its orbit around Saturn and begins to accelerate towards a star system far away. The ship Rockhopper is the only ship in range to intercept, and it is sent out to do so and to perform some analysis. The plan is: Intercept, make a five-day-analysis, then head back home.
Of course it's not that easy.
I won't tell what happens, that would be spoiling it. . But I will tell as much. First, there will be aliens, and humans know nothing in comparison to their achievements. Second, you will get a feeling of what "time" and "space" means on a cosmic scale. Third, reading the book WILL leave you with a tensed feeling, you will feel small, alone and insignificant in comparison to that universe and to time.
Still it's the story about the crew of Rockhopper, and what happens to them, and about how they are coping with the ongoings. It is always about them.
What I personally like most of Alastair is that he manages to get the feeling across. As reader you can actually glimpse of what it must be like to be confronted with things on a scale so much larger than anything we can usually imagine. You feel the vast emptiness of space, the incomprehensible distances of time, the insignificance of one single planet in space. But the main stunner is that this is only a side effect - it is neccessary for the story to evolve. And a good story it is, a story about people, motivations, friendship - something that grips you, with an end that leaves you frustrated and a little bit disturbed.
Great science fiction, paired with enormous writing talent.