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Definitions from WordNet

Definitions from the Web

Light Years

Description:

Light years refer to a unit of astronomical distance, measuring the distance that light travels in a year. In a metaphorical sense, light years can also be used to describe a significant difference or a vast amount of time or space between two things.

Sample Sentences:

As a unit of astronomical distance:

• The nearest star to Earth, Proxima Centauri, is about 4.24 light years away.
• Scientists estimate that the diameter of our Milky Way galaxy is approximately 100,000 light years.

In a metaphorical sense:

• The technology used in this new smartphone is light years ahead of its predecessor.
• The cultural differences between the two countries felt like light years apart.

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