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Units of distance
| Astronomical Unit | 149,597,870 km 8.32 light minutes | AE |
| Speed ??of Light | 299,792.458km/s | |
| light second | 299,792.458km | Ls |
| light minute | 17.99 million km | Lm |
| light hour | 1.08 billion km | Lh |
| light year | 9,460.5 billion km = 63,240 AU | LJ |
| parsecs | 3.262 LY 31,000 billion km | pcs |
| Kiloparsecs | 1,000 pcs 3,262 LY 31,000,000 billion km |
kpc |
| megaparsecs | 1,000 kpc 1 million pc 3.262 million LY |
Mpc |
