A million years from now,Alpha Centauri will no longer be the nearest star system to our own.
A)Earth rotates once each day.
B)Earth revolves around the Sun once each year.
C)The direction of Earth's axis in space precesses with a period of 26,000 years.
D)Stars appear to move randomly in the local solar neighborhood
E)The universe is expanding.

Question

Quizplus · Accepted Answer

Stars, including our Sun and the stars in the Alpha Centauri system, exhibit proper motion, moving through space relative to each other. Over long periods, this can change their apparent positions and distances from Earth, potentially making Alpha Centauri no longer the nearest star system.

A Million Years from Now,Alpha Centauri Will No Longer Be