parsec

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Definitions from WordNet

Noun parsec has 1 sense

parsec, secpar - a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
--₁ is a kind of astronomy unit

Definitions from the Web

Parsec

Description:

A parsec is a unit of length used in astronomy to measure vast distances between celestial objects. It is based on parallax and is equal to about 3.09 trillion kilometers or 3.26 light-years.

Sample Sentences:

1. The nearest star to our solar system, Proxima Centauri, is approximately 1.3 parsecs away.
2. The Hubble Space Telescope can observe galaxies billions of parsecs away.
3. The concept of a parsec is important in understanding the vast scale of the universe.

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