Reach Mars from Earth with the technology we have today , it represents a journey of about five months. Yes , special tours require a large investment of time , because today we have the technology to find places that have never before been visited, but the way to get remains the same for decades.
But now a group of physicists at the University of California , presented an aggressive project, which seeks to reduce significantly the time paths of space travel , this with the help of photonic propulsion , which would replace existing engines fuel space vehicles.