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Reasons why astronomers have difficulty looking at distant stars except?
Light years of dust lanes obscure the view of distant stars in visible light. However, radio telescopes can penetrate the dust and can detect (in the x-ray and infrared spectra) the stars in the core of our galaxy.They don't understand how redshift affects stars.
Which observer is seeing light that is affected by redshift?
Any observer in another galaxy.
What is the best term to describe how light waves from a star are affected as the star moves away from Earth?
redshift
Does red shift expand the universe?
Redshift does not expand the universe. Redshift is a physical quantity that is used to describe the expansion of the universe. The current time has a redshift of zero. at redshift 1, the universe was half the size it is now. At redshift 2, the universe was 1/3 the size it is now, and so on. if redshift is z, then (size of universe at redshift z)/(current size of universe)= 1/(z+1)
How red shift connect with universe expanding?
The expansion of the Universe results in the light from faraway galaxies being redshifted. This is called the "cosmological redshift"; it can be compared with the Doppler effect (which also causes a redshift), but the details are somewhat difference.It is an observed fact that most galaxies are redshifted; the explanation that seems most reasonable is that it is caused by the cosmological redshift. This means that space itself is expanding.
What causes a cosmological redshift?
A redshift occurs when the wavelengths increase in objects by light or electromagnetic radiation levels in an object. In cosmological redshift also has to do with light; however, instead of an increase in wavelengths, there is an expansion of the universe.
What is the redshift star?
The redshift is caused by relative motion that increases the distance from the source to the observer. The faster the source of light is moving away to the observer, the greater the redshift
What has the author David Tytler written?
David Tytler has written: 'Strong associated C IV absorption in low redshift quasars' -- subject(s): Absorption spectra, Interstellar gas, Quasars, Stellar spectra
Is there any proof that the universe is changing?
Yes, there is proof. The universal redshift that appears in all distant electromagnetic spectra proves that the universe is expanding.
Is a redshift of 8 equal to a light travel distance of 13 billion years?
Yes, a redshift of 8 does equal to a light travel distance of 13 billion years.
Is a redshift of 5 equal to a light travel distance of 12.5 billion years?
Yes, a redshift of 5 does equal to a light travel distance of 12.5 billion years.
Supported by observed red shifts in the spectra of galaxies?
This redshift is a strong indication that the Universe is expanding. The only reasonable explanation of this redshift is the Doppler effect, and this means that the galaxies are moving away from us. The greater their distance from us, the faster they move away.
Reasons why astronomers have difficulty looking at distant stars except?
Light years of dust lanes obscure the view of distant stars in visible light. However, radio telescopes can penetrate the dust and can detect (in the x-ray and infrared spectra) the stars in the core of our galaxy.They don't understand how redshift affects stars.
What is extinction spectra?
The extinction spectra is actually the measurement of light absorption in different mediums. This spectra is used in chemistry and biochemistry.
What kind of shift would you see if a light was moving away from you?
redshift
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Which observer is seeing light is affected by redshift?
Any observer in another galaxy.
