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well it depends on what you are measuring your 'much' in. First thing is, a light year is a distance not a time. It is defined as the distance light would travel in the time of one human year. Now to define this:

light travels at ~300000000ms-1 and there are 31536000s in one year, so light will travel:

300000000*31536000 = 9.5x1015 metres in one year (that is 95 followed by 14 zeros! so a long distance)

so in 9.7 light years light will travel 9.2x1016 metres. Which is a very very long distance.

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15y ago

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