365: Day 93 – Thoughts on space travel

I love stories of science fiction and find the idea of travelling faster than the speed of light to reach distant worlds in little time fascination. I am far from being the only one who dreams of travelling among the stars, but it is pretty much certain this will never happen. Our present understanding of physics tells us that it is not possible to travel faster than the speed of light and even reaching speeds a fraction of the speed of light will require a tremendous amount of energy and will significantly slow down time for would-be travelers. At journey to our closest neighboring star at light speed will be a journey longer than 4 years. Travelling at any significant speed well below the speed of light will likely be a journey of decades from the traveler’s perspective and centuries from the perspective of earth. The space explorer will have to sacrifice the chance of seeing all their loved ones ever again.