1. dust
2. Hubble's constant
3. Local Group
4. Dark matter is massive enough to produce a gravitational redshift and gravitational microlensing in light from nearby stars or galaxies. The mass of visible matter also can be compared to the total mass of a galaxy or cluster. This invisible portion of the total mass is called dark matter.
5. In an expanding universe, objects are moving away from Earth, so the light they emit would have a redshift as observed from Earth. In a decelerating universe, light would have no redshift. Light would have a blueshift in a collapsing universe because all objects in that type universe would be moving toward each other.
Answer:
The correct option is (C)
Explanation:
Hypothesis is referred to as an assumption or wild guess that needs to be tested to arrive at a scientifically established theory,
Here, Jill proposes a hypothesis which states that igneous rocks produced by volcanoes constitute some kind of chemical that could be used by scientists to estimate the origin of the rocks.
This hypothesis can be tested only by collecting the rock samples and testing them to arrive at a scientifically proven fact.
Answer:
Explanation:
As we are given to calculate :
= ?
1 million is equal to =
1 trillion is equal to = 1 million million =
Putting in the values we get:
Thus the correct answer is
The meaning of emissions as it is used in the NASA article is substances released into the atmosphere.
<h3>What are atmospheric emissions?</h3>
Atmospheric emissions are those are those substances or gases that are released into the environment from factories and industries that leads to air pollution.
Examples of atmospheric gas emissions include the following:
Therefore, the meaning of emissions as it is used in the NASA article is substances released into the atmosphere.
Learn more about air pollution here:
brainly.com/question/9420026
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