If I built a space ship that could accelerate at exactly 1G indefinitely, how long would it take to reach the speed of light? - Quora
![If a rocket were traveling in space outside of any gravitational field, does it need to have its motor on all the time, or should it just accelerate at the beginning? - If a rocket were traveling in space outside of any gravitational field, does it need to have its motor on all the time, or should it just accelerate at the beginning? -](https://qph.cf2.quoracdn.net/main-qimg-cc1f76c9359cad5415f8f01777507254.webp)
If a rocket were traveling in space outside of any gravitational field, does it need to have its motor on all the time, or should it just accelerate at the beginning? -
![mathematics - Time at 1 g acceleration to travel 100 000 light years - Space Exploration Stack Exchange mathematics - Time at 1 g acceleration to travel 100 000 light years - Space Exploration Stack Exchange](https://i.stack.imgur.com/jDMoQ.gif)