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What spectra are used to analyze stars?
The spectra of the stars you want to analyze.
What do astromoners measure distance in between stars with?
light years
What is the units used to measure the distance of stars to the earth?
light years
The unit to measure distances between stars is in?
Light years or parsecs
How can you measure the time using the stars?
light years
Why do scientists believe that stars contain the same elements as the solar system?
The elements on the visible part of distant stars can be obtained from the star spectra, that is, by analyzing the light that comes from the stars.
Which type of spectrum do most stars have?
Most stars have absorption spectra. In other words, stars possess thin outer layers that allow light to pass through. These layers produce what are called absorption lines. This means the light from the sun and stars are absorption spectra.
What spectra are used to analyze stars?
The spectra of the stars you want to analyze.
How do scientists use different spectra to figure out the composition of the stars outer layer?
Different chemical elements emit (or absorb) certain specific frequencies of light. When the light from a star is split in to it's rainbow spectrum of light, certain parts of the spectrum will be black (in absorption spectra) or brighter (in emission spectra). By comparing these lines to the known emission and absorption spectra of elements, the composition of a stars atmosphere can be determined.
Is it true that scientists can learn about the chemical composition of stars by analyzing the light they transmit?
Yes
What unit would you use to measure the distances from stars?
To measure the distance of stars you have to measure by light years.
How do different scientists spectra to figure out the composition of a star's outer layer?
The color of the light radiated by the spectra can show the internal composition as well as the gases burning on the outer layer. Red stars are colder and blue stars are hotter.
What are the units called that measure distances to stars?
They measure them in light-years.
What unit of measure is used to measure the distance to the stars?
light years
What characteristics do scientists measure to determine the temperature and composition of stars?
the light radiated from the stars
What is measure of the amount of a stars light received on earth?
Parallax
What do astromoners measure distance in between stars with?
light years
