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How are parsecs used in astrophysics?

Answer 1

Hailey Alvarez

It is used to measure the distance between stars

#1# #pa##rs##ec=3.26# #light # #years#

And a light year is the distance travelled by light in one year

Which is approximately #9.46*10^15m#

It is the distance of something that has a parallex angle of 1 arcsecond

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Answer 2

Christopher Ales

One parsec is about 3.26 light-years, and parsecs are commonly used in astrophysics to measure large distances, especially when describing the distances between stars and galaxies. Because parsecs are a convenient scale for astronomical objects, astronomers prefer using them over light-years when measuring cosmic distances.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.