What does a red shift in light from distant celestial objects indicate to a scientist on earth?

Answers

Answer 1

Answer:
A red shift in light from a distant source is always assumed to indicate
that the distant source is moving away from us. That would certainly
cause it, and we don't know of anything else that would, so it's the only
way we know to explain it.

Just about all of modern Cosmology, including the whole idea of the
expanding universe, is based on that interpretation of the red shift.

Understand this: That interpretation does explain many things that
we do see in space, and it predicts things that we do find when we
look for them. But that does not prove it, and there is no way to prove
it. So it's perfectly correct to say that it's "only a theory".

Just like gravity, atoms, and the nature of light.

Related Questions

A praying mantis catches and eats a moth. Which of the following set of terms describes the praying manits?A.Omnivore, heterotroph, producerB.Producer, carnivore, autotrophC.Predator, herbivore, heterotrophD.Consumer, Carnivore, Predator
Earth’s inner core is solid because ofA. the composition of its rock. B. its great diameter. C. extreme cold. D. immense pressure.
As the force increases, so does the _______ of the object. A.intensity B.speed C.weight D. volume
Cellular respiration is a series of complicated reactions. Some of the enzymes that are necessary for the reactions to take place effectively are not produced by the body and must be eaten in a person’s diet. Which answer correctly explains what happens when a person's diet lacks the necessary enzymes for cellular respiration? A. The production of ATP will increase as the enzyme decreases. B. The cellular respiration reactions will use another available enzyme. C. The cellular respiration reaction rate that uses the missing enzyme will increase. D. The cell's energy level will diminish as the enzyme decreases.
How do scientists figure out the age of a substance using radiometric dating?

Which of the following statements about adaptive radiation is correct? View Available Hint(s) Which of the following statements about adaptive radiation is correct? Adaptive radiation occurs within a single lineage. Adaptive radiation occurs in species that live in one habitat. Adaptive radiation occurs very slowly over time. Adaptive radiation occurs in the presence of competitors.

Answers

Answer:

Adaptive radiation occurs within a single lineage

Explanation:

Adaptive radiation generally occurs when an organism enters a new area and different traits affect its survival. An adaptive radiation is a burst of evolution, creating several new species out of a single parent species, which simply means that adaptive radiation occurs when a single lineage produces many descendant species. Adaptive radiation is considered to be a rapid process, where adaptation from a recent common ancestor takes place in a short period of time (with respect to geological time, of course).

Final answer:

Adaptive Radiation refers to the process causing a rapid rate of speciation, within a single lineage, particularly when a single species invades various diverse environments. This process leads to multiple new species evolving from a single ancestral species. An established example illustrating this concept is Darwin's study of finches on the Galapagos Islands.

Explanation:

The correct statement about adaptive radiation is that it occurs within a single lineage. Adaptive radiation is a process that prompt multiple speciation events in a relatively short time, particularly when a single species invades different and diverse environments. Each of these invasions results in adaptational and evolutionary changes, leading to multiple new species originating from a single ancestral species.

For instance, Charles Darwin's study of finches on the Galapagos Islands is a classic example of adaptive radiation. The different beak shapes evolved over time in response to the different food sources available on the separate islands within the archipelago.

Learn more about Adaptive Radiation here:

brainly.com/question/31475207

When working in the lab testing different pH levels of acids and bases what safety rule must you always follow?

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Answer:

When anyone testing different levels of acid and bases some safety rules must be followed like:

Wear gloves: One should wear gloves while working with acids or base so that his hand remain safe from any damage by acid or base. Acid can cause burns in hand so gloves are most important to wear.

Mask: Fumes can be generate mainly by acids which can cause irritation so masks should is important to get protection from them.

Lab coat: Lab coat protects the body from any spill of acid or base and should be wear while working in lab.

Wear safety glasses to protect your eyes

Why is it important to use metric system when conducting scientific investigation

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So you know that your measurements are exactly correct.

The metric system is in place as a standard unit of measurement. It's important to use standardized units so that scientists elsewhere, anywhere, can repeat the investigations to confirm the work.

The digestive system contains a variety of parts that perform specific functions within the body. The small and large intestines have some similarities and some differences. Which function is only performed in the small intestine?

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In the digestive system, the food and theproducts of digestion pass through the muscular tube known as intestine. It extendsfrom the lower end of the stomach to the lower opening tract of the digestivetract or the anus. The intestine is divided into two sections, the small andlarge intestine. Although both parts receive the digestion and product of thefood, they differ in some areas. For the small intestine, its main function isto carry out most of the digestive process such as absorbing the entirenutrient you get from foods into your bloodstream. This function is not presentin the large intestine because the digested food is mixed with the digestivejuices form the small intestine and no nutrients left for the large intestineto handle.

Answer:

mineral absorption

Water is drawn upward from the roots through plant tissue to the leaves by

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water exaporates frm the leaves and other parts of the plant above the ground. The evaporation of water from the plant is called ''transpiration''. It occurs mainl through the stomata. However, as quickly as water is lost from the leaves, more water enters the roots and flows up the stem. The water flows up the plant in narrow pipes, rather like capillary tubes. These tubes make up the xylem. The walls of the tubes are made of lignin, which is hard and waterproof. In trees and shurbs the xylem tubes are one of the main components of wood. They do not contain living material and are therefore dead.` Water rises up the stem mainly by being ''pulled'' from above. The ''pull'' is created by the evaporation if water from the leaves. If you stop this by, for example, cutting iff the leaves or blocking the stomata, the flow of water up the stem slows down or stops. The drier the atmosphere, the greater is the rate of transpiration. In very dry wather, water may evaporate from the leaves faster than it is replaced from the soil. The plant then suffers from water shortage. Normally a plant's cells are full of water, and all the cells are pressing against each other within the epidermial covering. This helps to support the plant amd holds the leaves out flat. If a plant runs short of water, the cells lose water and go flabby. The plant then droops. This is called wilting. Plants living in dry places have all sorts of adaptations for not

THE CORRECT ANSWER IS A) CAPILLARY ACTION

Which organisms could be classified as a plant

Answers

Plantae (the plants)Animalia (the animals)Fungi (for instance, toadstools and mushrooms)Monera (bacteria and blue-green algae)Protista (for instance, microscopic organisms called protozoa).

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The phenomenon in which the meaning of something is influenced by the information environment is called _____.