Astronomical Distance Units: AU, Light-year, Parsec

Question 1

Approximately how many astronomical units are in one light‑year?

Accepted Answer

63,241 AU

Question 2

Approximately how many astronomical units are in one parsec?

Accepted Answer

206,265 AU

Question 3

Approximately how many light‑years are in one parsec?

Accepted Answer

3.26156 ly

Question 4

Approximately how many parsecs are in one light‑year?

Accepted Answer

0.306601 pc

Question 5

Approximately how many parsecs is one astronomical unit?

Accepted Answer

4.8481×10⁻⁶ pc

Question 6

Approximately how many light‑years is one astronomical unit?

Accepted Answer

1.5813×10⁻⁵ ly

Question 7

State the defining geometric meaning of a parsec.

Accepted Answer

distance at which 1 AU subtends one arcsecond

Question 8

Approximately how many light‑years are 10 parsecs?

Accepted Answer

32.6156 ly

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