Question

The star Betelgeuse is about 600 light-years away. If it explodes tonight,

A. we'll know because debris from the explosion will rain down on us from space.B. we'll know it immediately because it will be brighter than the full Moon in the sky.C. we won't know about it until 600 years from now.D. none of the above.

Answer 1

The star Betelgeuse is about 600 light-years away.

If it explodes tonight, we won't know about it until 600 years from now. (C)

(Maybe it already has. If it exploded any time after the year 1419, we have no way to know it yet.)

Answer 2

C

Step-by-step explanation:

It has to travel 600 light years before we would be able to observe the explosion.