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Why do some galaxies look red when they should be white?
As the universe expands these galaxies are moving away from us. The light waves they give off appear stretched out which means they have a longer wavelength. Wavelength relates to the colour of light and the longer the wavelength the closer to red it looks.
What is the largest known structure in the universe and is composed of galaxies and clusters of galaxies?
A so-called "great wall", which is a block of galaxies more than a billion light-years long.
The Doppler effect applies to light waves as well as sound waves. Astronomers use this to measure the motion of stars and galaxies. In 1929 Edwin Hubble discovered that light from distant galaxies was?
shifted to longer wavelengths, indicating that the galaxies were moving away from us. This observation led to the development of the theory of the expanding universe.
What is the longer leg called on a led light?
The longer leg on a LED light is called the anode. It is usually the positive terminal and is marked with a longer leg or a "+" symbol.
What is red shift inti?
When galaxies move away from us, the waves of light stretch out- ie, they become redder. The greater the red shift, the faster the galaxies are moving away from us.
What is The bending of light due to the great mass of distant galaxies?
The bending of light due to great masses is called Gravitational MicroLensing.
Will you move into another galaxy?
Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.
Do galaxies emit light?
Yes, galaxies emit light primarily from the stars within them. This light can range from visible light to other forms of electromagnetic radiation such as radio waves, infrared, ultraviolet, and X-rays. The light emitted by galaxies allows astronomers to study their composition, age, and distance from Earth.
The size of galaxies are measured in?
They are measured in light years. Galaxies are often 100,000 light years across or more.
Do galaxies produce their own light?
Galaxies are made partly of stars, which produce light. So, in that sense, yes.
What you get when stars are moving away?
When stars are moving away from us, we observe a phenomenon called redshift. This redshift occurs because the light from the stars is stretched, causing its wavelength to become longer. The greater the redshift, the faster the star is moving away from us.
If a star moves away from earth when all lines shift to where the waves are longer is what?
This phenomenon is known as redshift, which occurs when light from a moving object is shifted to longer wavelengths as it moves away from an observer. Redshift is a key piece of evidence supporting the theory of an expanding universe, as it indicates that galaxies are moving away from each other.
