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Red shift is the doppler effect manifest in light. The doppler effect is why for instance a police siren or a train horn seems higher in pitch while coming towards you, and lower in pitch moving away from you. The red shift effect is the same principle applied to light. If a body emits light, moving towards you it appears to have a "higher pitch", which amounts to what's called blue shift. Moving away, the "pitch" seems lower, amounting to red shift.
It was Edwin Hubble who in 1929 formulated the law about red shift as it relates to bodies in space moving away from us, and thus discovered that the universe spanned beyond our own galaxy. Red (and blue) shift can also be used to find planets around other stars, so called exoplanets; as planets in orbits around stars gravitationally tug on the parent star, the star wobbles a bit, and this wobble gives rise to very subtle velocities towards and away from us, depending on the location of the planet in its orbit, giving rise to a slight red or blue shift in the light from the star. This gives us information about the periodicity of the orbits of the planets, as well as their mass.
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What does a red shift tell astronomers about stars or galaxies?
A red shift in the light emitted by a star or galaxy indicates that it is moving away from us. By measuring the amount of red shift, astronomers can determine the speed at which the object is receding and use this information to study the expansion of the universe and the distance to the object.
What does red shift tell us about other galaxies?
Red shift indicates that other galaxies are moving away from us, implying that the universe is expanding. This phenomenon is a key piece of evidence supporting the Big Bang theory. The amount of red shift is used to determine the distance and speed at which other galaxies are moving relative to us.
How can the red shift be used to give us more information about the universe?
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How is the universe changing by red shift?
Redshift in the universe occurs as objects move away from one another, expanding the universe. This indicates that the universe is still expanding, consistent with the Big Bang theory. The rate of this expansion, known as the Hubble constant, provides insight into the age and future of the universe.
Observation of the red shift of galaxies suggest that the universe is what?
Expanding Or that the light is exiting a gravity hole (star).
What does red shift of the universe show is us?
universe is expanding at an accelerated rate.
How does blue and red shift help us understand the changes of the universe?
Red shift has confirmed the expansion of universe. Both red and blue shift at the edges of the sun has confirmed the spin of sun..
What does a red shift tell astronomers about stars or galaxies?
A red shift in the light emitted by a star or galaxy indicates that it is moving away from us. By measuring the amount of red shift, astronomers can determine the speed at which the object is receding and use this information to study the expansion of the universe and the distance to the object.
What does red shift tell us about other galaxies?
Red shift indicates that other galaxies are moving away from us, implying that the universe is expanding. This phenomenon is a key piece of evidence supporting the Big Bang theory. The amount of red shift is used to determine the distance and speed at which other galaxies are moving relative to us.
How can the red shift be used to give us more information about the universe?
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What theory does red shift support?
Red shift supports the theory of the expanding universe proposed by Edwin Hubble. The observed red shift in the spectra of distant galaxies indicates that they are moving away from us, providing evidence for the idea that the universe is continuously growing and expanding.
What does the red shift tell us about the changing universe?
Mainly that the Universe is expanding. Analyzing far-away galaxies, it has recently become clear that the expansion is accelerating - the Universe is now expanding faster than a few billion years ago.
How is the universe changing by red shift?
Redshift in the universe occurs as objects move away from one another, expanding the universe. This indicates that the universe is still expanding, consistent with the Big Bang theory. The rate of this expansion, known as the Hubble constant, provides insight into the age and future of the universe.
Observation of the red shift of galaxies suggest that the universe is what?
Expanding Or that the light is exiting a gravity hole (star).
What model of universe creation is supported by the red shift?
All modern models based on science that are worth their salt would be. The only major theory I know about the origin of the universe is the Big Bang Theory, which is supported by Red Shift observations. Galaxies we can observe are all moving away (we know this due to Red Shift) from a central point, believed to be the epicenter of the Big Bang.
What is significant about the red shift spectra of galaxies?
The red shift spectra of galaxies show that most galaxies are moving away from us, indicating that the universe is expanding. This observation supports the Big Bang theory, which suggests that the universe began in a state of high density and temperature and has been expanding ever since. The amount of red shift in a galaxy's spectrum can also provide information about its distance from us and its velocity.
What does the red shift of the galaxies tell us about their motion with respect to the Earth?
Less than you'd think. At extreme distances, the red-shift is caused by metric expansion more than by motion. So to be able to gauge the speed of an object relative to you, you'd first have to determine the pseudo-speed caused by metric expansion.
