megaparsec
1
9.9
- noun
- /ˈmɛɡəˌpɑrsɛk/
- Specialized
- (A megaparsec is 3.26 x 10^6 light-years.)
Examples
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And that's simply finding how many of these megaparsecs we need to go for the expansion rate to equal the speed of light.
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So what we want to multiply this by is the number of megaparsecs in one kilometer.
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In recent years, contending observers have argued for values of HSUB0 as low as 50 and as high as 90 km/sec per megaparsec.
Academic text (1994) -
Papers published in the past year have claimed more than 15 different values, from 45 to 105 kilometers per second per megaparsec, corresponding to constant-velocity expansion for 20 down to less than 10 billion years.
Academic text (1995) -
Use the observations in one way, and you get a small Hubble constant; use them in another way, and the constant is 80 to 85 kilometers per second per megaparsec—and, as noted throughout the popular press, the universe is awkwardly young compared to some of the stars in it.
Academic text (1995) -
The distance between our galaxy and the nearest galaxy is about two million megaparsecs.
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Astronomers use megaparsecs to measure the vast distances between galaxies in the universe.
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The galaxy cluster is located approximately ten megaparsecs away from Earth.
How Far
- Specialized
1
9.9
- Specialized
1
9.9
- Specialized
8
9.9
- Specialized
62
4.9
Surface Forms
Morphology
Etymology
Megaparsec joins mega- meaning 'large' or 'million', the same mega- you see in megabyte, and parsec, a distance unit that comes from 'parallax', the small shift of a star when we change our view. So a megaparsec is one million parsecs and is used to measure the very large distances between galaxies.