Which of the following best summarizes what we mean by dark matter?Matter for which we have theoretical reason to think it exists, but no observational evidence for its existence.Matter that we have identified from its gravitational effects but that we cannot see in any wavelength of light.Matter that may inhabit dark areas of the cosmos where we see nothing at all.Matter consisting of black holes.

Question

24-04-2019
Physics

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Which of the following best summarizes what we mean by dark matter?Matter for which we have theoretical reason to think it exists, but no observational evidence for its existence.Matter that we have identified from its gravitational effects but that we cannot see in any wavelength of light.Matter that may inhabit dark areas of the cosmos where we see nothing at all.Matter consisting of black holes.

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cryssatemp cryssatemp · Answer 1 · 2019-05-03T08:33:53+02:00

Answer: Matter that we have identified from its gravitational effects but that we cannot see in any wavelength of light

Dark matter is a type of matter, whose composition is unknown and which corresponds to 80% of the matter in the universe. Its name refers to the fact it does not emit or interact with any type of electromagnetic radiation, being completely transparent throughout the electromagnetic spectrum.

However, it interacts with the known matter through gravity.

This means that, like gravity, dark matter can not be observed directly, however its existence is inferred through the movement of the stars and the cosmic dust within the galaxies.

lenguida lenguida · Answer 2 · 2021-01-27T14:46:49+01:00

lenguida lenguida

27-01-2021

Answer:

5- Normal, 68-dark energy, 27 dark matter

Explanation:

What is the correct composition of the universe, based on theoretical and cosmological observations?

dark energy

dark matter

normal matter

5 percent

arrowRight

68 percent

arrowRight

27 percent

arrowRight

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