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How do astronomers determine the composition of distant celestial objects?
Wiki User
∙ 14y ago
Spectroscopy is the systematic study of spectra and spectral lines. Spectral lines are used to provide evidence about the chemical composition of distant objects. So the answer to your question is through spectroscopy.. not spectrometry like the previous editor posted.
Wiki User
∙ 14y ago
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Quasar in a sentence?
Astronomers have detected a quasar in a distant galaxy.
Which of the following is not a reason that astronomers have trouble viewing distant stars?
Distant stars give off less light
Do All of the following are reasons why astronomers have difficulty looking at distant stars except?
They don't understand how redshift affects stars.
How do astronomers measure the distance to nearby stars?
Astronomers use a method called parallax to measure the distance to nearby stars. Astronomers can measure parallax by measuring the position of a nearby star with respect to the distant stars behind it. Then, they measure the same stars again six months later when the Earth is on the opposite side of its orbit.
When astronomers study distant galaxies they notice changes to the waves they observe describe the change to the waves they observe?
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.
What are the methods that astronomers use to identiy the composition of distant stars?
Spectroscopy.
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.
How does a spectroscope enable astronomers to determine the characteristics of distant stars and galaxies?
en.wikipedia.org/wiki/Spectroscopy
How can astronomers infer approximately how long the universe has been expanded?
Astronomers can determine the expansion of the universe by observing the cosmic background radiation, and the red- or blue-shifting of distant objects.
Why is Newton's version of Kepler's third law so useful to astronomers?
It can be used to determine the masses of many distant objects. :P
What is the rotational period of the Celestial Sphere in hours and how would you determine that?
The rotational period of the celestial sphere is simply the reflection of Earth's rotation; therefore, it rotates once every 23 hours and 56 minutes. You can determine that by observing the apparent movement of distant stars.
Quasar in a sentence?
Astronomers have detected a quasar in a distant galaxy.
How are spectrums used to study?
Astronomers use the light spectrum of distant objects to determine the chemical composition of those objects. Each element on the period table gives off a different spectrum, and by looking through a spectrometer an astronomer can read the spectrum and figure out what that object is made up of to gain better understanding of our universe.
Which of the following is not a reason that astronomers have trouble viewing distant stars?
Distant stars give off less light
How can astronomers tell what a distant object's temperature is?
blah blah black sheep
How can astronomers tell what a distant object's velocity?
By using the habo space telescle to detect the object's velocity
Can astronomers tell what a distant object is made of?
spectrocity...absorption of select frequency of light ie spectrocity
