For science fiction writers, the universe has no limits. They imagine spacecraft conquering the unknown, the mining of asteroids, access to solar power and room for colonization by earthlings tempted by new frontiers billions of miles and dreams away. Or worlds to conquer barred by radioactive fields, devilish storms, metallic dust, unbearable darkness leading towards black holes and hell in space, and the sun, radiating up to 15 million degrees Celsius, which suggests nothing less ...