Answer: The nearest star to Earth is Proxima Centauri, 4.3
Chapter 26, Problem 55GP(choose chapter or problem)
Problem 55GP
The nearest star to Earth is Proxima Centauri, 4.3 lightyears away. (a) At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 4.9 years, as measured by travelers on the spacecraft? (b) How long does the trip take according to Earth observers?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer