It will take longer that people here have calculated. As you approach c the energy required to accelerate quickly rises. To reach c you need infinite energy.
Maintaining 1g of acceleration for a useful amount of time would require an extraordinary amount of propellant.
All of those estimates are tongue-in-cheek and are accurate if your energy expenditure is actually unlimited.
Maintaining 1g of acceleration for a useful amount of time would require an extraordinary amount of propellant.
All of those estimates are tongue-in-cheek and are accurate if your energy expenditure is actually unlimited.