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What was Edwin Hubble's equation?
Hubble's equation states that the velocity at which various galaxies are receding from the Earth is proportional to their distance from us.The law is often expressed by the equation v = H0D, with H0 the constant of proportionality (the Hubble constant) between the distance D to a galaxy and its velocity v. The SI unit of H0 is s-1 but it is most frequently quoted in (km/s)/Mpc, thus giving the speed in km/s of a galaxy one Megaparsec away. The reciprocal of H0 is the Hubble time.
How fast is a galaxy 3400 billion light years from earth moving away from us?
A galaxy that is 3,400 billion light-years away from Earth is likely moving away from us at a significant speed due to the expansion of the universe. According to Hubble's Law, the recessional velocity of a galaxy is proportional to its distance from us. At such extreme distances, the galaxy could be receding at a speed approaching or even exceeding the speed of light due to the expansion of space itself. However, since nothing can locally exceed the speed of light, this recession is a result of the metric expansion of space rather than the galaxy moving through space.
What is meant by velocity distance relationship with regard to the expanding universe?
The velocity-distance relationship in the expanding universe refers to the observation that the further away a galaxy is from us, the faster it appears to be moving away. This relationship is described by Hubble's Law, which states that the velocity at which a galaxy is receding is directly proportional to its distance from us. This relationship is one of the key pieces of evidence for the expansion of the universe.
Why isn't a galaxy size alone useful in determining its distance from earth earth?
The only thing that can be directly observed is a galaxy's apparent size (angular size). Since galaxies come in different sizes, this can only give a rough idea of the galaxy's distance from Earth.
Do all stars belong to a galaxy or can a star exist without belonging to a galaxy?
All stars we currently know of are part of a galaxy. Stars are born within galaxies from clouds of gas and dust. If a star were to exist without belonging to a galaxy, it would likely be a result of very rare and extreme circumstances, such as being ejected from its parent galaxy due to a collision or interaction with another galaxy.
What is the scientific rule describing the velocity of recession of galaxies?
it is when the galaxy doesn't have any moneys left and are homeless in the galaxy.
What is the recessional velocity of a galaxy at a distance of 200 Mpc?
The recession velocity of a galaxy at a distance of 200 Mpc (mega-parsecs) would depend on Hubble's Law and the rate of expansion of the universe. For a rough estimate, assuming a Hubble constant of 70 km/s/Mpc, the recession velocity would be around 14,000 km/s.
When did Hubble discover that the universe was expanding?
Edwin Hubble discovered that the universe was expanding in 1929 when he observed that distant galaxies were moving away from us, as indicated by their redshift in their spectral lines. This discovery led to the formulation of Hubble's law, which describes the relationship between a galaxy's distance and its velocity of recession.
Which has greater velocity than light?
Nothing. 'c' is the universal constant, the maximum velocity for all radiation in any field. Except for phenomina like the gas jet in galaxy M87 which the Hubble telescope has confirmed at significantly over 2.5 x light speed from our reference frame. This is because both the galaxy it is in and the cluster the galaxy is in are moving in the same direction.
What is the redest planet in galaxy?
All the planets in the galaxy have not yet been observed.
What is meant by the expansion velocity of a galaxy?
The speed at which a galaxy is expanding/getting larger.
What specific galaxy was observed by Magellan in 1520 known as the Magellanic galaxies?
Irregular Galaxy
What direction are observed galaxies moving from your galaxy?
Away.
Where in the galaxy are high-velocity stars found?
in the halo
What is the velocity of the Andromeda galaxy?
The Andromeda galaxy is moving towards our Milky Way galaxy at a velocity of approximately 110 kilometers per second. This movement is creating a collision course between the two galaxies, which is expected to occur in about 4.5 billion years.
What galaxy is impossible to see from earth?
All of those that have not been observed.
What galaxy was observed by Magellan in 1520 these are known as the Magellan galaxies?
Irregular
