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The most common way is to do a spectral analysis. EM radiation arrives right across the spectrum of different frequencies, and a lot of information is discovered by recording and analysing the different amounts that arrive at the different frequencies.
One of the major methods used is to identify different elements in parts of the universe by their spectral lines - energy concentrated at certain frequencies/wavelengths.
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∙ 11y ago
Wiki User
∙ 13y agoIt is important for astronomers to study the entire range of the electromagnetic spectrum because every star, including our Sun, emits light at a wide range of wavelengths, all across the visible spectrum, and even outside the visible spectrum. Astronomers can learn a lot from studying the details of the spectrum of light from a star.
Wiki User
∙ 14y agoFor very much the same reason that a musician studies sound. Because that's the mode by which information can be gathered regarding the objects and processes that the astronomer is really studying. And don't forget radio too.
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∙ 16y agoTelescopes use light created by the stars in order to either refract it or reflect its image in the hope of magnifying the image.
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∙ 12y agoI believe you are referring to a field known as spectroscopy, wherein the light reflected from a celestial body is measured to reveal the composition of that object based on wavelengths.
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∙ 14y agoBecause of how far away everything is in the galaxy.
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∙ 14y agothey study the colour because that tells you how hot or cold it is
Wiki User
∙ 12y agoWe use astronomy my because of our urge for curiosity and exploration, to understand the universe around us which can also help understand our own planet.
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What does ly stand for in Astronomy?
That is short for "light-year" - the distance light travels in a year. Approximately 9.5 million million kilometers.
Define light year and explain its value in astronomy?
A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.
Why did aboriginal tribes use astronomy?
Aboriginals used astronomy to predict the coming of the seasons and for a path for there ancestors
What is study of the universe beyond earth?
Astronomy
Is astronomy a collective noun?
No, the noun 'astronomy' is a word for a specific branch of science.A collective noun is a noun used to group people or things in a descriptive way; for example, a quantum of scientists or a galaxy of stars.
Why is light an important tool used in astronomy?
Stars are the sources of light. If they did not emit light, there would be no stars and thus no astronomy.
How are light and astronomy related?
Studying light is one part of astronomy. Things like the speed of light, how it travels, the spectrum of light are all things that are used in studying astronomy. Studying light emitted from a star can tell us all sorts of things about it, like how far away it is and how bright it really is.
What is an astronomy satellite?
Probably a satellite used for astronomy observations.Probably a satellite used for astronomy observations.Probably a satellite used for astronomy observations.Probably a satellite used for astronomy observations.
What is a measurement of distance based on the speed of light?
A unit that is commonly used in astronomy is the light-year - the distance light travels in a year.
How light year is measured?
A light year is a unit of length used in Astronomy to define distance. One light year is equal to just under 6 trillion miles.
What is a parasec?
A parasec is a length of distance usually used in astronomy that is equal to 3.26163626 light years.
What is a light curve graph?
A light curve graph that displays an object's brightness over time mostly used in variable star astronomy.
What is a Light ratio in astronomy?
albedo
Why a light year used in astronomy?
Because of the vast distances in space and a light year is the distance of light travelling at 186,000 miiles per second in one year.
How do scientists measure distances in space light years or CMEs?
Common units used in astronomy include astronomical unit; light-year; parsec.
Do you measure distance from stars in light years?
Yes. At least, that is one measurement that is often used. Parsecs are also often used in astronomy.
How are CCD's relative to astronomy?
CCDs, or Charge-Coupled Devices, are the light sensor chips used in all digital cameras. The application to astronomy, especially to space telescopes and space probes, is obvious.
