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What 2 measurement are required to determine the Hubble constant?
To determine the Hubble constant, two key measurements are needed: the distance to a celestial object (typically measured using standard candles like type Ia supernovae or Cepheid variable stars) and the object's redshift (measured from the Doppler effect in its spectrum, indicating how fast it is moving away). These measurements help scientists calculate the rate at which the universe is expanding.
How does the age of the universe relate to the hubble constant?
The age of the universe is inversely proportional to the Hubble constant. A smaller Hubble constant would imply a younger universe, while a larger Hubble constant would suggest an older universe. This relationship is based on the assumption that the expansion rate of the universe has been constant over time.
How do you measure the hubble constant from a graph?
That's going to depend on the type of information that the graph presents. For example, if it's a graph of the Fed's prime lending rate over the past five years, or the CO2 content of the atmosphere since the 16th Century, or the growth of HIV in Africa, there would be no way. On the other hand, if the graph showed the radial velocities of 200 galaxies vs. their measured distances, then you'd have a pretty good chance ... the Hubble Constant would be just the slope of the best fit line on that graph.
If the hubble constant H is larger at great distances then what is happening?
An increasing Hubble constant at great distances indicates an accelerated expansion of the universe. This phenomenon is attributed to dark energy, a mysterious force causing the universe to expand at an increasing rate. It suggests that as the universe expands, the distance between galaxies grows larger, leading to a greater Hubble constant at greater distances.
What is the current accepted Hubble constant value in cosmology?
Oh- what a beautiful question! The current accepted Hubble constant value in cosmology is around 74 kilometers per second per megaparsec. It represents the rate at which the universe is expanding- just like adding brushstrokes to a scenic canvas, giving depth and dimension to our understanding of the cosmos.
What 2 measurement are required to determine the Hubble constant?
To determine the Hubble constant, two key measurements are needed: the distance to a celestial object (typically measured using standard candles like type Ia supernovae or Cepheid variable stars) and the object's redshift (measured from the Doppler effect in its spectrum, indicating how fast it is moving away). These measurements help scientists calculate the rate at which the universe is expanding.
How would you work out the Hubble constant if the earth is 12.5 billion years old?
The Earth is not 12 billion years old. It is more like 5 billion years old. Hubble's constant cannot be determined from the age of the Earth. Hubble's constant describes how fast the universe is expanding. It can be determined by looking at the redshifts of stars that are a known distance away. From the redshift, one can determine the velocity of the star. Then Hubble's constant is defined as follows: v=Hd where v is the velocity of the star, H is Hubble's constant and d is the distance to the star. The current accepted value of Hubble's constant is about 71 km/s/Mpc.
What estimate does the inverse of Hubble's constant provide?
The inverse of Hubble's constant provides an estimate of the age of the universe.
How does the age of the universe relate to the hubble constant?
The age of the universe is inversely proportional to the Hubble constant. A smaller Hubble constant would imply a younger universe, while a larger Hubble constant would suggest an older universe. This relationship is based on the assumption that the expansion rate of the universe has been constant over time.
What relationship is identified by Hubble's constant?
h=vd
Why can't scientists calculate the hubble constant exactly?
I can't find the answer anywhere. Everywhere I look it just says that it's still not the exact value of the Hubble constant. Why?
How was the cosmoligical constant proved wrong by Hubble?
Hubble's discovery of the expanding universe in the 1920s provided evidence against the static universe model favored at the time, which relied on a cosmological constant to maintain stability. By observing that galaxies were moving away from each other and the universe was expanding, Hubble's findings contradicted the need for a cosmological constant to explain a static cosmos.
How do you measure the hubble constant from a graph?
That's going to depend on the type of information that the graph presents. For example, if it's a graph of the Fed's prime lending rate over the past five years, or the CO2 content of the atmosphere since the 16th Century, or the growth of HIV in Africa, there would be no way. On the other hand, if the graph showed the radial velocities of 200 galaxies vs. their measured distances, then you'd have a pretty good chance ... the Hubble Constant would be just the slope of the best fit line on that graph.
When did science discover that all matter is in constant motion?
If the galaxies are meant, it is credited to Edwin Hubble and became known as "Hubble's Law".
Who was the Hubble named after and why?
It was named after Edwin P. Hubble (1889 - 1953) for his pioneering work in astrophysics. The Hubble constant is the basis for the determination of the size of the universe and an essential piece of the foundations of the Big Bang theory.
What can the the hubble space telescope do?
The Hubble Space Telescope can capture high-resolution images of celestial objects, make precise measurements of astronomical phenomena, study the atmospheres of planets, and help determine the age and expansion rate of the universe through observations of distant galaxies and supernovae.
What would your estimate be for the age of the universe if you measured Hubble's constant to be 11 kilometers per second per million light-years?
Using a Hubble's constant of 11 km/s/Mly would estimate the age of the universe to be approximately 8.9 billion years. This calculation is based on the reciprocal of the Hubble's constant, accounting for the expansion rate of the universe.
