habitable planet 117 light-years away
Let me reiterate to those who think 117 light years are close: do not despair, it is never a distance to travel.
formula for measuring distance in km
299.000x60x60x24x365x117= 1.103.223.888.000.000 km away. ie 1 quadrillion kilometers away. Well, let's see how many hours we can go with a rocket/ship/ship/uss enterprise/millennium falcon traveling at a speed of 100,000 km/h: We'll go in 11,032,238,880 hours. so how many years does it correspond to: 1,258,669 years.