Recession
A more modest scenario, assuming a slower rate of depletion and a smooth transition to alternative energy sources could cause substantial economic hardship such as a recession
Recession ...
Recession Speed - The rate of movement of a galaxy away from the Milky Way caused by the expansion of the universe ...
Recessional Velocity
The velocity at which an object moves away from an observer. The recessional velocity of a distant galaxy is proportional to its distance from Earth. Therefore, the greater the recessional velocity, the more distant the object.
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The recessional motions of the galaxies prove that the cosmos is not steady and unchanging on the largest scales. Its contents are in constant relative motion, and the motion is not random.
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where v = recessional velocity of object due to expansion of the universe, H = value of the Hubble constant at the time of observation t0, and d is the distance to the object.
where v is the recession velocity, R is the distance to the galaxy, and Ho is the constant of proportionality known as Hubble's constant.
(a) The law that recessional speed is proportional to distance for a homogeneous and isotropic universe. Galaxies moving away from us with a speed precisely following this law are said to follow the Hubble flow.
Hubble's Law The relationship discovered by Edwin Hubble in the 1920s that shows a linear relationship bewteen the reshift of an non-local galaxy and its recessional velocity.
Hubble constant (NASA Thesaurus) The rate at which the velocity of recession of the galaxies increases with distance.
They are crowded together and therefore rendered shorter and more frequent by the advance of their source, but drawn apart and lengthened by its recession.
This red shift is called cosmological, and from the amount of red shift astronomers can calculate the recession velocity.
B-V colors, but show only relative change.) The bottom graph shows the "radial velocity" of the star, that is, how fast the star appears to be moving along the line of sight as determined from the Doppler shift (positive values indicating recession).
Hubble Law the relationship between a galaxy's recession speed from other galaxies and the distance between them: the recession speed = H × distance, where H is the Hubble constant.
8 nm, we calculate that the object has a recession velocity of 1,000 km/sec. Apart from measuring distances, this type of analysis can also be used to detect spectroscopic binaries and extrasolar planets.
where v represents the galaxy's recessional velocity, d is its distance away from Earth, and Ho is a constant of proportionality called Hubble's Constant. This equation is known as Hubble's Law.
This recession of galaxies away from us has an interesting effect on the light emitted from these galaxies. When an object is moving away from us, the light that it emits is "redshifted".
The most striking feature we see when we look at the galaxies is their motion: the galaxies on average are moving away from us, with the speed of recession proportional to distance when the speed is much less than the speed of light.
The expansion rate of the universe has increased and the redshift I measure is concurrent with that fact, not with the recession velocity of your host galaxy at the time that you were emitted.
In 1929 Hubble and Milton Humason formulated the empirical Redshift Distance Law of galaxies, nowadays known as Hubble's law, which, once the redshift is interpreted as a measure of recession speed, ...
This generalization became the basis for what is called Hubble's law, which correlates the recessional velocity of a galaxy with its distance from the Earth.
Similarly, in the orbit of the earth or another planet around the sun, the perihelion is the point of closest approach and the aphelion is the point of farthest recession.
All of the clouds between the quasar and us have different recessional speeds because of the expansion of the Universe.
One other interesting result emerged from the 1984 apparition -- the appearance of the water-ice orographic clouds forming over the Tharsis volcanoes were delayed nearly one Martian month, corresponding to the delay in NPC recession. A.L.P.O.
A variant of this method is to measure the radial velocity (the speed of approach or recession in the line of sight) of nearby stars.
Redshifts directly measure the recessional speeds of galaxies. If Hubble's law is assumed, this speed can be translated to distance. Under such an assumption, a redshift survey provides the third dimension, depth, for the galaxies in a survey.
8 nm, one can calculate that the object has a recession velocity of 1,000 km/sec. This type of analysis can also be used to detect spectroscopic binaries and extra-solar planets.
Definition: Hubble constant; (E.P. Hubble; 1925): The constant which determines the relationship between the distance to a galaxy and its velocity of recession due to the expansion of the Universe.
This recession results in a diminution of the light from these distant sources over and above that forecast by the inverse square law.
During recession, the edge of the cap becomes ragged, controlled by local topography (e.g., craters). Eventually, the cap breaks into well-defined fragments.
The constant which determines the relationship between the distance to a galaxy and its velocity of recession due to the expansion of the Universe. Since the Universe is self-gravitating, it is not truly constant. In cosmology, it is defined as ...
Hubble's Law Law that relates the observed velocity of recession of a galaxy to its distance from us. The velocity of recession of a galaxy is proportional to its distance. [More Info: Photo Album] ...
Unless Earth is the center of the universe--which astronomers ceased to believe long ago--this meant that galaxies everywhere were receding from each other, and that an observer anywhere would observe the same effect, a velocity of recession ...
"Britain's space industry has defied the recession and the government's commitments on space will help the sector go from strength to strength.
Redshift: The shift of all the spectral lines toward longer wavelengths due to the object's recession as seen from the Earth, this recession, at great distances, is due to the overall expansion of the Universe.
The linear relation between the velocity of recession of a distant object and its distance from us, v = H0d.
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An international protect to map the entire genome of Homo sapiens.
Hubble's constant. The rate of increase of the recession of a galaxy with increased distance from the Earth. This figure varies depending on which observational data one uses but is often around 50 miles per second per Megaparsec.
I ...
where vc is the cluster mean radial velocity (to be fully correct here one must either use the relativistic recession velocity or correct for another factor (1+z) in the result) and rij is the projected separation between galaxies i and j.
A measure of the rate of expansion of the universe. The average value of velocity of recession divided by distance. Presently believed to be between 50 and 100 km/s/Mpc.
Hubble time ...
In this way a plot of recession velocity (or redshift) vs. distance, which is a straight line at small distances, can tell us about the total amount of matter in the universe and may provide crucial information about the mysterious dark matter.
A graph of the velocity of recession or approach of the stars in a spectroscopic binary.
Radiation Pressure ...
Hubble discovered the expansion of the universe by measuring the red shifts of many galaxies. He also discovered that the recession velocity of a given galaxy is proportional to its distance from the Milky Way.
Hubble's constant
A constant which defines the relation between an object's recessional velocity and its distance.
Hubble constant (H): A measure of the rate of expansion of the universe; the average value of velocity of recession divided by distance; about 70 km/s/megaparsec.
The system shows a radial velocity of about 25 miles per second (mps) -- about 40 km per second or kps -- in recession, but the true space velocity is about 62 mps (or 100 kps).
The farther away the galaxy is from our galaxy the faster its recession speed. What could be causing this curious effect? Does our galaxy smell bad? Not at all. In fact, Hubble was observing the expansion of the Universe.
source of light is diminishing, the lines of the spectrum are displaced toward the violet, and, when the distance is increasing, they are displace toward the red, the displacement being proportional to the relative velocity of approach or recession.
 See also: Time, Earth, Light, Second, Distance
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