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

-we'll know because it will be brighter than the full Moon in the sky.

-we'll know because debris from the explosion will rain down on us from space.

-we won't know about it until about 600 years from now.

Question

Caroline Short

Physics

22 March, 00:03

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

-we'll know because it will be brighter than the full Moon in the sky.

-we'll know because debris from the explosion will rain down on us from space.

-we won't know about it until about 600 years from now.

+3

Answers (1)

Know the Answer?

Rowan Barton · Answer 1

-we won't know about it until about 600 years from now.

Explanation:

The speed of light is about 300,000_Km/s

A light-year is a distance unit. It is the distance travelled at the speed of light in a year. So in one year, the distance covered is about 10 trillion km.

The star Betelgeuse is about 600 light-years away. If it explodes tonight,-we'll know because it will be brighter than the full Moon in the sky.-we'll know because debris from the explosion will rain down on us from space.-we won't know about it until about 600 years from now.

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

-we'll know because it will be brighter than the full Moon in the sky.

-we'll know because debris from the explosion will rain down on us from space.

-we won't know about it until about 600 years from now.