megaparsec


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meg·a·par·sec

 (mĕg′ə-pär′sĕk)
n.
One million parsecs.

megaparsec

(ˈmɛɡəˌpɑːsɛk)
n
(Units) a unit of astronomical distance equal to one million parsecs

meg·a·par·sec

(mĕg′ə-pär′sĕk)
One million parsecs.
References in periodicals archive ?
At the present time the expansion rate of the universe, named the Hubble constant, is estimated to be approximately 73 km/s per megaparsec.
Measurements based on observations of supernovas, massive stellar explosions, indicate that distantly separated galaxies are spreading apart at 73 kilometers per second for each megaparsec (about 3.
In 2001, as part of the Hubble Space Telescope Key Project, a team of astronomers led by Carnegie's Wendy Freedman determined precision distances to individual far-off galaxies and used them to determine that the universe is expanding at the rate of 72 kilometers per second per megaparsec.
But bigger still by a factor of about 16 is the megaparsec, defined succinctly as follows: one million parsecs.
A kiloparsec is 1,000 parsecs, and a megaparsec is a million parsecs.
As a result, the team said it measured Hubble's constant at 70 kilometers per second per megaparsec (a megaparsec is 3.
Those that have been mrgd or acqrd twice will not be allowed to enter the market for a full megaparsec or until Halleys comet passes, whichever occurs first.
Those using the cosmic microwave background favor a value of about 67 kilometers per second per megaparsec (km/s/Mpc, where a megaparsec is 3.
7 miles per second per megaparsec (one megaparsec = 3.
0] d, which increases 72 km/sec per each megaparsec of the distance dto the object.
The units for the universe's expansion rate, kilometers per second per megaparsec (km/s/ Mpc) can be confusing.
1], about 62 km per second per megaparsec, an acceptable value [8].