If we could accelerate at 1g for just a few days, and reach just a fraction of a percent of the speed of light, the solar system would be our playground. We co

If we could accelerate at 1g for just a few days, and reach just a fraction of a percent of the speed of light, the solar system would be our playground. We could go to the moon for lunch, visit Mars for the weekend, and take a trip to Neptune every year.