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Turbulence in the atmosphere causes an apparent twinkling of stars as seen by the observer. When photographed this twinkling makes the start appear out of focus.
If an astronomer is not observing in visible light again the atmosphere can get in the way. If observing in the infra-red moisture [water] in the atmosphere absorbs infra-red making it impossible to observe at these wavelengths unless the observatory is located high above sea level.
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Do All of the following are reasons why astronomers have difficulty looking at distant stars except?
They don't understand how redshift affects stars.
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 of the following is not a reason that astronomers have trouble viewing distant stars?
Distant stars give off less light
Why astronomers have difficulty looking at distant star ecept?
Astronomers face challenges when observing distant stars primarily due to the vast distances involved, which can lead to light from these stars being faint and redshifted. Additionally, interstellar dust and gas can obscure their visibility, complicating detection. The Earth's atmosphere can also distort observations, making it harder to obtain clear images. However, advancements in technology, such as space telescopes, help mitigate some of these issues.
What is not standing in the way of astronomers getting a good view of distant stars?
Forgetting to remove the telescope lens cap is not usually the problem. The answer to this multiple choice question is "red shift" which is actually a useful phenomenon in viewing and analyzing the light from very distant stars. Light is shifted in wavelength by the movement of stars toward or more typically AWAY from the observer, or by moving through strong gravitational fields.
Why astronomers have difficulty looking at distant stars except?
Astronomers have difficulty looking at distant stars because while we have highly specialized telescopes, they are in constant contention with various other celestial bodies. In addition to this, the light of distant stars takes hundreds of thousands of years to reach us, making it impossible to get a current look at a distant star.
Do All of the following are reasons why astronomers have difficulty looking at distant stars except?
They don't understand how redshift affects stars.
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 of the following is not a reason that astronomers have trouble viewing distant stars?
Distant stars give off less light
Why astronomers have difficulty looking at distant star ecept?
Astronomers face challenges when observing distant stars primarily due to the vast distances involved, which can lead to light from these stars being faint and redshifted. Additionally, interstellar dust and gas can obscure their visibility, complicating detection. The Earth's atmosphere can also distort observations, making it harder to obtain clear images. However, advancements in technology, such as space telescopes, help mitigate some of these issues.
What are the methods that astronomers use to identiy the composition of distant stars?
Spectroscopy.
How does a spectroscope enable astronomers to determine the characteristics of distant stars and galaxies?
en.wikipedia.org/wiki/Spectroscopy
What are not a reason that astronomers have trouble viewing distant start?
Astronomers do not have trouble viewing distant stars due to their brightness, as many distant stars are incredibly luminous. Instead, challenges arise from factors like cosmic dust obscuring light, the expansion of the universe redshifting light from distant objects, and limitations of current telescope technology. Additionally, atmospheric interference can hinder ground-based observations, but these issues are not related to the inherent brightness of the stars themselves.
What is not standing in the way of astronomers getting a good view of distant stars?
Forgetting to remove the telescope lens cap is not usually the problem. The answer to this multiple choice question is "red shift" which is actually a useful phenomenon in viewing and analyzing the light from very distant stars. Light is shifted in wavelength by the movement of stars toward or more typically AWAY from the observer, or by moving through strong gravitational fields.
Do astronomers see distant stars as they were long ago?
Yes. Because they are so far away, the light from the stars takes a long time to reach us (other than our star, the sun, which takes 8 minutes for the light to get here.) That way, a star 8 lightyears away, will be seen as it was 8 years ago.
How do astronomers use parallax to describe how we measure the distance to other stars?
Astronomers use parallax to measure the distance to other stars by observing how a star appears to shift its position against the background of more distant stars as the Earth orbits the Sun. By measuring this apparent shift, astronomers can calculate the distance to the star based on the angle of the shift and the known distance between the Earth and the Sun.
Is there a lot of light pollution on Earth that makes it difficult for astronomers to observe at distant stars?
Yes, human electric lighting is polluting the night sky.
