The observatory on the moon has the proof. Life on earth will be incinerated in April 2037 by a massive solar flare. It is building down & it is unstoppable. With only 18 months until doomsday mankind must unite & embark on the most ambitious engineering project ever: the construction at the La Grange point between the sun & the earth of a deflecting mirror the diameter of our home planet. The price of failure? Extinction. One scientist an expert on the sun predicted the flare. One person who knew nothing about the sun nevertheless knew the exact date that life on earth would come to an end. She had witnessed the bizarre time dislocations brought by the eyes. She knows who is responsible. This is hard SF in the grand tradition of the genre