Question

How long will a plane have to fly continuously with 900 miles per hour in order to cover the same distance as that from Earth to the next star, Proxima Centauri?

Answer 1

I'm not sure about the distance to the nearest star, but it's probably about 4 light-years (L-y).

1 L-y = 1.86 * 10E5 mi/sec * 3600 sec/hr * 24 hr/day * 365 day/yr

1 L-y = 5.9 *10E12 mi and 4 L-y = 2.3 *10E13 mi distance to star

2.3 * 10E13 mi / 900 mi/hr = 2.6 * 10E10 hr hours to star

2.6 * 10E10 hr / (24 hr/day) = 1.1 * 10E9 day days to star

1.1 * 10E9 day / 365 day/yr = 3 * 10E6 yr = 3 million years to star