Category:Definitions/Light Year

This category contains definitions related to Light Year.

The light year is a derived unit of length.

It is derived as the distance travelled by light in a vacuum over the course of $1$ Julian year ($365.25$ days).

It is defined as being exactly $9 \, 460 \, 730 \, 472 \, 580 \, 800$ metres.

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$\ds 1$

light year

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$=$

$\ds 9 \, 460 \, 730 \, 472 \, 580 \, 800$

metres

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$\approx$

$\ds 5 \cdotp 8786 \times 10^{12}$

miles

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$\approx$

$\ds 632 \, 41 \cdotp 077$

astronomical units

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$\approx$

$\ds 0 \cdotp 3066$

parsec

Pages in category "Definitions/Light Year"

The following 5 pages are in this category, out of 5 total.