What does the increase in red shift tell us about the universe?

The next time you're at a railroad crossing and a passing train blows its horn, listen to it. Note that the horn is high-pitched as the train is approaching you, then drops to a lower pitch as it passes by and starts moving away from you. This is called the Doppler Effect, and is caused by the wavelength of the sound being compressed as the train approaches and stretched out as the train recedes.

Red Shift (and Blue Shift) is the electromagnetic equivalent of that. Yellowish light from a source that's rapidly approaching will have a shorter wavelength than if it was stationary, and will appear blueish; if the source is rapidly receding, the light will have a longer wavelength and will take on a red hue.

More generally, anything that adds energy to light will increase its frequency, shorten its wavelength, and “Blue Shift” it; and anything that removes energy from light reduces its frequency, extends its wavelength, and “Red Shifts” it. Relative motion is one way to do this; gravity is another.

A note for the Relativity fans out there: while the speed of light is invariant, its frequency is not. And things that you would expect to increase or decrease speed instead Blue Shift or Red Shift light.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

i think the answer is gold im not entirely sure