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When astronomers study distant galaxies they notice changes to the waves they observe describe the change to the waves they observe?
Wiki User
∙ 11y ago
Because the universe as a whole is expanding, distant galaxies are moving away from us. As a result, electromagnetic waves emitted by those galaxies experience what is known as a red shift. Their wavelengths get longer.
Wiki User
∙ 11y ago
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The visible part of distant galaxies is the galaxies'?
Stars
Why is spring one of the best seasons to observe distant galaxies?
Because in the spring, the night sky is pointed out of the Milky Way and therefore it is easier to see distant galaxies.
Quasar in a sentence?
Astronomers have detected a quasar in a distant galaxy.
Scientists believe that the more distant galaxies formed?
the answer is "first".
Which of the following is not a reason that astronomers have trouble viewing distant stars?
Distant stars give off less light
How does a spectroscope enable astronomers to determine the characteristics of distant stars and galaxies?
en.wikipedia.org/wiki/Spectroscopy
Based on the observed red shifts in the spectral lines of distant galaxies?
Astronomers conclude that the universe is expanding, because wavelengths are increasing.
The visible part of distant galaxies is the galaxies'?
Stars
The visible part of distant galaxies is the galaxies what?
The "nucleus".
What destroyed the steady state theory?
Briefly, the Steady State theory assumes that the Universe looked the same in the past as it does now. Observations of distant galaxies showed that this is not the case - distant galaxies are quite different to the ones that are closer by. Note that if you look at distant galaxies, you are observing the past of the Universe, because of the time it takes light to get here. That evidence played a part, but it was the detection of the "cosmic microwave background radiation". That was what convinced most astronomers that the Big Bang Theory was correct.
Why do scientists study distant galaxies to learn about galaxies?
cuz they are explorers
Why the development of the telescope with better magnification has helped astronomers to find out more about the universe?
It has allowed astronomers to find out more about the universe, creating clearer more detailed images, also allowing them to look further into the universe to see things such as distant galaxies, stars and planets.
Why has the development of the telescope with better magnification helped astronomers to find out more about the universe?
It has allowed astronomers to find out more about the universe, creating clearer more detailed images, also allowing them to look further into the universe to see things such as distant galaxies, stars and planets.
Why do astronomers think that quasars represent an early stage of galactic evolution?
There are more quasars in faraway galaxies, i.e., in the distant past.There are more quasars in faraway galaxies, i.e., in the distant past.There are more quasars in faraway galaxies, i.e., in the distant past.There are more quasars in faraway galaxies, i.e., in the distant past.
Why do scientist study the light coming from distant galaxies?
They study distant galaxies because they want to know whats out in other galaxies and how many planets it has
Quasars are thought to be the center of distant?
galaxies
What cause changes in the light coming from distant stars and galaxies?
The apparent redshift is caused by the Doppler Effect; the frequency of waves is increased by an approaching source and decreased by a leaving source. Since the fgrequencies we see from stars are slightly lower than they should be, we know that the stars and other objects are moving away. The Doppler Effect causes changes of light emanating from distant stars and galaxies.
